bad dc motor controller with current mode

Dependencies:   mbed FastPWM3

Files at this revision

API Documentation at this revision

Comitter:
bwang
Date:
Sun Feb 03 03:38:05 2019 +0000
Commit message:
first commit

Changed in this revision

CommandProcessor/CommandProcessor.cpp Show annotated file Show diff for this revision Revisions of this file
CommandProcessor/CommandProcessor.h Show annotated file Show diff for this revision Revisions of this file
CommandProcessor/cmd_helpers.cpp Show annotated file Show diff for this revision Revisions of this file
CommandProcessor/cmd_mode.cpp Show annotated file Show diff for this revision Revisions of this file
CommandProcessor/cmd_set_get.cpp Show annotated file Show diff for this revision Revisions of this file
CommandProcessor/cmd_sys.cpp Show annotated file Show diff for this revision Revisions of this file
FastPWM.lib Show annotated file Show diff for this revision Revisions of this file
Filter/Filter.cpp Show annotated file Show diff for this revision Revisions of this file
Filter/Filter.h Show annotated file Show diff for this revision Revisions of this file
Filter/fCircularBuffer.cpp Show annotated file Show diff for this revision Revisions of this file
PreferenceWriter/FlashWriter.cpp Show annotated file Show diff for this revision Revisions of this file
PreferenceWriter/FlashWriter.h Show annotated file Show diff for this revision Revisions of this file
PreferenceWriter/PreferenceWriter.cpp Show annotated file Show diff for this revision Revisions of this file
PreferenceWriter/PreferenceWriter.h Show annotated file Show diff for this revision Revisions of this file
PreferenceWriter/stm32f4xx_flash.c Show annotated file Show diff for this revision Revisions of this file
PreferenceWriter/stm32f4xx_flash.h Show annotated file Show diff for this revision Revisions of this file
globals.h Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CommandProcessor/CommandProcessor.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,37 @@
+#include "mbed.h"
+#include "CommandProcessor.h"
+#include "globals.h"
+
+void processCmd(Serial *pc,char *buf) {
+    char *tokens[10];
+    int len = tokenize(buf, tokens, 10);
+    
+    switch (len) {
+    case 1:
+        if (strcmp(tokens[0], "clear") == 0) cmd_clear(pc);
+        else if (strcmp(tokens[0], "help") == 0) cmd_help(pc);
+        else if (strcmp(tokens[0], "reload") == 0) cmd_reload(pc, pref);
+        else if (strcmp(tokens[0], "load") == 0) cmd_reload(pc, pref);
+        else if (strcmp(tokens[0], "flush") == 0) cmd_flush(pc, pref);
+        else if (strcmp(tokens[0], "src") == 0) cmd_ls2(pc, tokens[0]);
+        else if (strcmp(tokens[0], "op") == 0) cmd_ls2(pc, tokens[0]);
+        else if (strcmp(tokens[0], "ls") == 0) cmd_ls(pc);
+        else pc->printf("%s\n", "Bad command");
+        break;
+    case 2:
+        if (strcmp(tokens[0], "setp") == 0) cmd_setp(pc, tokens[1]);
+        else if (strcmp(tokens[0], "freq") == 0) cmd_freq(pc, tokens[1]);
+        else if (strcmp(tokens[0], "ls") == 0) cmd_ls2(pc, tokens[1]);
+        else if (strcmp(tokens[0], "src") == 0) cmd_src(pc, tokens[1]);
+        else if (strcmp(tokens[0], "op") == 0) cmd_op(pc, tokens[1]);
+        else if (strcmp(tokens[0], "query") == 0) cmd_query(pc, tokens[1]);
+        else pc->printf("%s\n", "Bad command");
+        break;
+    case 3:
+        if (strcmp(tokens[0], "set") == 0) cmd_set(pc, tokens[1], tokens[2]);
+        break;
+    default:
+        pc->printf("%s\n", "Bad command");
+        break;
+    }
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CommandProcessor/CommandProcessor.h	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,36 @@
+#ifndef __COMMAND_PROCESSOR_H
+#define __COMMAND_PROCESSOR_H
+
+#include "mbed.h"
+#include "PreferenceWriter.h"
+
+void processCmd(Serial *pc, char *buf);
+
+/*---mode switching---*/
+void cmd_setp(Serial *pc, char *buf);
+void cmd_freq(Serial *pc, char *buf);
+void cmd_src(Serial *pc, char *buf);
+void cmd_op(Serial *pc, char *buf);
+void cmd_ls(Serial *pc);
+
+/*---setting/getting parameters---*/
+void cmd_ls2(Serial *pc, char *buf);
+void cmd_set(Serial *pc, char *buf, char *val);
+void cmd_flush(Serial *pc, PreferenceWriter *pref);
+void cmd_reload(Serial *pc, PreferenceWriter *pref);
+void cmd_query(Serial *pc, char *buf);
+
+/*---system commands---*/
+void cmd_clear(Serial *pc);
+void cmd_help(Serial *pc);
+
+/*---internal functions---*/
+int tokenize(char *buf, char **out, int max);
+int str_to_src(char *buf);
+char* src_to_str(int n);
+float* checkf(char *s);
+int* checkn(char *s);
+char* op_to_str(int n);
+int str_to_op(char *buf);
+
+#endif
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CommandProcessor/cmd_helpers.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,88 @@
+#include "mbed.h"
+#include "CommandProcessor.h"
+
+#include "globals.h"
+
+int tokenize(char *buf, char **out, int max) {
+    char* tok;
+    int k = 0;
+    
+    tok = strtok(buf, " ");
+    
+    while(tok != NULL && k < max) {
+        out[k] = tok;
+        k++;
+        tok = strtok(NULL, " ");
+    }
+    return k;
+}
+
+#define __check(x) if(strcmp(s, #x) == 0) return &x
+
+float* checkf(char *s) {
+    __check(KP);
+    __check(KI);
+    __check(I_LIMIT);
+    __check(F_SW);
+    __check(THROTTLE_DEADBAND);
+    __check(ANALOG_THROTTLE_LOW);
+    __check(ANALOG_THROTTLE_HI);
+    return NULL;
+}
+
+int* checkn(char *s) {
+    return NULL;
+}
+
+#define __strcase(in, out) case in:strcpy(result, out);break
+#define __intcase(in, out) if (strcmp(buf, in) == 0) return out
+
+char* src_to_str(int n) {
+    static char result[12];
+    switch (n) {
+        __strcase(CMD_SRC_RC, "RC");
+        __strcase(CMD_SRC_ANALOG, "Analog");
+        __strcase(CMD_SRC_TERMINAL, "Terminal");
+        __strcase(CMD_SRC_SERIAL, "Serial");
+        __strcase(CMD_SRC_CAN, "CAN");
+        __strcase(CMD_SRC_INTERNAL, "Internal");
+    default:
+        strcpy(result, "Invalid");
+        break;
+    }
+    return result;
+}
+
+int str_to_src(char *buf) {
+    __intcase("rc", CMD_SRC_RC);
+    __intcase("analog", CMD_SRC_ANALOG);
+    __intcase("terminal", CMD_SRC_TERMINAL);
+    __intcase("serial", CMD_SRC_SERIAL);
+    __intcase("can", CMD_SRC_CAN);
+    __intcase("internal", CMD_SRC_INTERNAL);
+    return -1;
+}
+
+
+char* op_to_str(int n) {
+    static char result[24];
+    switch(n) {
+        __strcase(OP_TORQUE, "Torque loop");
+        __strcase(OP_DRIVING, "Driving map");
+        __strcase(OP_SPEED, "Open-loop speed");
+        __strcase(OP_POSITION, "Position loop");
+    default:
+        strcpy(result, "Invalid");
+        break;
+    }
+    return result;
+}
+
+int str_to_op(char *buf) {
+    __intcase("torque", OP_TORQUE);
+    __intcase("driving", OP_DRIVING);
+    __intcase("speed", OP_SPEED);
+    __intcase("pos", OP_POSITION);
+    __intcase("position", OP_POSITION);
+    return -1;
+}    
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CommandProcessor/cmd_mode.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,39 @@
+#include "mbed.h"
+#include "CommandProcessor.h"
+
+#include "globals.h"
+
+void cmd_setp(Serial *pc, char *buf) {
+    float dtc = atof(buf);
+    if (dtc < 0.0f) dtc = 0.0f;
+    if (dtc > 1.0f) dtc = 1.0f;
+    user_cmd = dtc;
+}
+
+void cmd_freq(Serial *pc, char *buf) {
+    float freq = atof(buf);
+    if (freq < 500.0f) freq = 500.0f;
+    if (freq > 10000.0f) freq = 10000.0f;
+    TIM1->ARR = (int) ((float) 9e7 / freq);
+}
+
+void cmd_src(Serial *pc, char *buf) {
+    int n = str_to_src(buf);
+    if (n < 0) {
+        pc->printf("%s\n", "Invalid Source");
+        return;
+    }
+    BREMS_src = n;
+    pc->printf("Set source to %s\n", src_to_str(n));
+}
+
+void cmd_op(Serial *pc, char *buf) {
+    int n = str_to_op(buf);
+    if (n < 0) {
+        pc->printf("%s\n", "Invalid operation");
+        return;
+    }
+    BREMS_op = n;
+    pc->printf("Set operation to %s\n", op_to_str(n));
+}
+    
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CommandProcessor/cmd_set_get.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,63 @@
+#include "mbed.h"
+#include "CommandProcessor.h"
+#include "globals.h"
+
+#define FPRINT(a) pc->printf("%s: %f\n", #a, a)
+#define DPRINT(a) pc->printf("%s: %d\n", #a, a)
+
+void cmd_ls(Serial *pc) {
+    DPRINT(PREFS_VALID);
+    FPRINT(I_LIMIT);
+    FPRINT(KP);
+    FPRINT(KI);
+    FPRINT(F_SW);
+    FPRINT(THROTTLE_DEADBAND);
+    FPRINT(ANALOG_THROTTLE_LOW);
+    FPRINT(ANALOG_THROTTLE_HI);
+}
+
+void cmd_ls2(Serial *pc, char *buf) {    
+    if (strcmp(buf, "src") == 0) {
+        pc->printf("%s\n", src_to_str(BREMS_src));
+        return;
+    }
+    if (strcmp(buf, "op") == 0) {
+        pc->printf("%s\n", op_to_str(BREMS_op));
+        return;
+    }
+    
+    float *fptr = checkf(buf);
+    if (fptr != NULL) pc->printf("%s: %f\n", buf, *fptr);
+    int *nptr = NULL;
+    if (fptr == NULL) nptr = checkn(buf);
+    if (nptr != NULL) pc->printf("%s: %d\n", buf, *nptr);
+    if (nptr == NULL && fptr == NULL) pc->printf("%s\n", "No Such Parameter");
+}
+
+void cmd_set(Serial *pc, char *buf, char *val) {
+    float *fptr = checkf(buf);
+    if (fptr != NULL) *fptr = (float) (atof(val));
+    int *nptr = NULL;
+    if (fptr == NULL) nptr = checkn(buf);
+    if (nptr != NULL) *nptr = (int) (atoi(val));
+    if (nptr != NULL || fptr != NULL) cmd_ls2(pc, buf);
+    if (nptr == NULL && fptr == NULL) pc->printf("%s\n", "No Such Parameter");
+}
+
+void cmd_flush(Serial *pc, PreferenceWriter *pref) {
+    if (!pref->ready()) pref->open();
+    PREFS_VALID = 1;
+    pref->flush();
+}
+
+void cmd_reload(Serial *pc, PreferenceWriter *pref) {
+    pref->load();
+    if (PREFS_VALID) pc->printf("Flash Values Loaded\n");
+}
+
+void cmd_query(Serial *pc, char *buf) {
+    if (strcmp(buf, "i") == 0) pc->printf("%f\n", current);
+    else if (strcmp(buf, "cmd") == 0) pc->printf("%f\n", throttle);
+    else if (strcmp(buf, "v") == 0) pc->printf("%f\n", vout);
+    else pc->printf("%s\n", "No such parameter");
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CommandProcessor/cmd_sys.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,11 @@
+#include "mbed.h"
+#include "CommandProcessor.h"
+
+void cmd_clear(Serial *pc) {
+    pc->printf("\e[1;1H\e[2J");
+}
+
+void cmd_help(Serial *pc) {
+    pc->printf("%s\n", "setp <float>: set a duty cycle between 0.0 and 1.0");
+    pc->printf("%s\n", "freq <float>: set a frequency between 500.0Hz and 10000.0Hz");
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/FastPWM.lib	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/users/benkatz/code/FastPWM3/#51c979bca21e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Filter/Filter.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,21 @@
+#include "mbed.h"
+#include "math.h"
+#include "Filter.h"
+
+MedianFilter::MedianFilter(int length) {
+    buf = new fCircularBuffer(length, true);
+}
+
+float MedianFilter::update(float x) {
+    buf->add(x);
+    return buf->median();
+}
+
+MovingAverageFilter::MovingAverageFilter(int length) {
+    buf = new fCircularBuffer(length, false);
+}
+
+float MovingAverageFilter::update(float x) {
+    buf->add(x);
+    return buf->mean();
+}   
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Filter/Filter.h	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,55 @@
+#ifndef __FILTER_H
+#define __FILTER_H
+
+#include "mbed.h"
+#include "math.h"
+
+class fCircularBuffer {
+public:
+    fCircularBuffer(int length, bool use_median);
+    float oldest() {if (oldest_index >= 0) return buf[oldest_index]; return 0.0f;}
+    float newest() {if (newest_index >= 0) return buf[newest_index]; return 0.0f;}
+    int length() {return _length;}
+    void add(float x); /*recomputes mean, median - O(length) time*/
+    float &at(int index);
+public:
+    float &operator[](int index) {return at(index);}
+public:
+    /*O(1) time*/
+    float mean();
+    float median();
+private:
+    int _length;
+    bool _use_median;
+    int oldest_index, newest_index, num;
+    double sum;
+private:
+    float *buf;
+    float *sorted;
+};
+
+class Filter {
+public:
+    virtual float update(float x) = 0;
+    virtual float read() = 0;
+};
+
+class MedianFilter : public Filter {
+public:
+    MedianFilter(int length);
+    virtual float update(float x);
+    virtual float read() {return buf->median();}
+private:
+    fCircularBuffer *buf;
+};
+
+class MovingAverageFilter : public Filter {
+public:
+    MovingAverageFilter(int length);
+    virtual float update(float x);
+    virtual float read() {return buf->mean();}
+private:
+    fCircularBuffer *buf;
+};
+
+#endif
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Filter/fCircularBuffer.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,152 @@
+#include "mbed.h"
+#include "math.h"
+#include "Filter.h"
+
+fCircularBuffer::fCircularBuffer(int length, bool use_median) {
+    _length = length;
+    _use_median = use_median;
+    
+    oldest_index = 0;
+    newest_index = -1;
+    num = 0;
+    sum = 0.0f;
+    
+    buf = (float*)malloc(_length * sizeof(float));
+    sorted = (float*)malloc(_length * sizeof(float));
+    for (int i = 0; i < _length; i++) {
+        buf[i] = 0.0f;
+        sorted[i] = 0.0f;
+    }
+}
+
+float &fCircularBuffer::at(int index) {
+    int actual = oldest_index + index;
+    if (actual >= _length) actual -= _length;
+    return buf[actual];
+}
+
+void fCircularBuffer::add(float x) {
+    if (num < _length) {
+        newest_index++;
+        buf[newest_index] = x;
+        sum += x;
+        num++;
+
+        if (!_use_median || _length < 4) return;
+
+        /*insert x into sorted array*/
+        int i = num - 1;
+        while (i > 0 && sorted[i - 1] > x) {
+            sorted[i] = sorted[i - 1];
+            i--;
+        }
+        sorted[i] = x;
+    } else {
+        /*update circular buffer*/
+        float oldest = buf[oldest_index];
+
+        sum -= buf[oldest_index];
+        oldest_index++;
+        if (oldest_index >= _length) oldest_index -= _length;
+
+        newest_index++;
+        if (newest_index >= _length) newest_index -= _length;
+        buf[newest_index] = x;
+
+        sum += x;
+
+        if (!_use_median || _length < 4) return;
+
+        /*find sorted index of oldest element*/
+        int removed;
+        for (removed = 0; removed < _length; removed++) {
+            if (sorted[removed] == oldest) break;
+        }
+
+        /*insert x*/
+        int i;
+        if (removed == _length - 1) {
+            i = _length - 1;
+            while (i > 0 && sorted[i - 1] > x) {
+                sorted[i] = sorted[i - 1];
+                i--;
+            }
+            sorted[i] = x;
+        } else if (removed == 0) {
+            i = 0;
+            while (i < _length - 1 && sorted[i + 1] < x) {
+                sorted[i] = sorted[i + 1];
+                i++;
+            }
+            sorted[i] = x;
+        } else if (sorted[removed - 1] <= x && sorted[removed + 1] >= x) {
+            sorted[removed] = x;
+        } else if (sorted[removed - 1] > x) {
+            i = removed;
+            while (i > 0 && sorted[i - 1] > x) {
+                sorted[i] = sorted[i - 1];
+                i--;
+            }
+            sorted[i] = x;
+        } else {
+            i = removed;
+            while (i < _length - 1 && sorted[i + 1] < x) {
+                sorted[i] = sorted[i + 1];
+                i++;
+            }
+            sorted[i] = x;
+        }
+    }
+}
+
+float fCircularBuffer::mean() {
+    return sum / num;
+}
+
+float median3(float *buf) {
+    if (buf[0] > buf[1]) {
+        if (buf[1] > buf[2]) {
+            return buf[1];
+        } else if (buf[0] > buf[2]) {
+            return buf[2];
+        } else {
+            return buf[0];
+        }
+    } else {
+        if (buf[0] > buf[2]) {
+            return buf[0];
+        } else if (buf[1] > buf[2]) {
+            return buf[2];
+        } else {
+            return buf[1];
+        }
+    }
+}
+float fCircularBuffer::median() {
+    if (_length == 1) {
+        return buf[0];
+    }
+    if (_length == 2) {
+        if (num < 2) return buf[0];
+        return (buf[0] + buf[1]) / 2.0f;
+    }
+    if (_length == 3) {
+        if (num < 2) return buf[0];
+        if (num == 2) return (buf[0] + buf[1]) / 2.0f;
+        return median3(buf);
+    }
+    if (num < _length) {
+        if (num % 2 == 1) {
+            return sorted[(num - 1) / 2];
+        } else {
+            return (sorted[num / 2] + sorted[num / 2 - 1]) / 2.0f;
+        }
+    }
+    else {
+        if (_length % 2 == 1) {
+            return sorted[(_length - 1) / 2];
+        } else {
+            return (sorted[_length / 2] + sorted[_length / 2 - 1]) / 2.0f;
+        }
+    }
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PreferenceWriter/FlashWriter.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,53 @@
+#include "stm32f4xx_flash.h"
+#include "FlashWriter.h"
+
+FlashWriter::FlashWriter(int sector) {
+    if (sector > 7) sector = 7;
+    __sector = sector;
+    __base = __SECTOR_ADDRS[sector];
+    __ready = false;
+}
+
+bool FlashWriter::ready() {
+    return __ready;
+}
+
+void FlashWriter::open() {
+    FLASH_Unlock();
+    FLASH_ClearFlag( FLASH_FLAG_EOP |  FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
+    FLASH_EraseSector(__SECTORS[__sector], VoltageRange_3);
+    __ready = true;
+}
+
+void FlashWriter::write(uint32_t index, int x) {
+    union {int a; uint32_t b;};
+    a = x;
+    FLASH_ProgramWord(__base + 4 * index, b);
+}
+
+void FlashWriter::write(uint32_t index, unsigned int x) {
+    FLASH_ProgramWord(__base + 4 * index, x);
+}
+
+void FlashWriter::write(uint32_t index, float x) {
+    union {float a; uint32_t b;};
+    a = x;
+    FLASH_ProgramWord(__base + 4 * index, b);
+}
+
+void FlashWriter::close() {
+    FLASH_Lock();
+    __ready = false;
+}
+
+int flashReadInt(uint32_t sector, uint32_t index) {
+    return *(int*) (__SECTOR_ADDRS[sector] + 4 * index);
+}   
+
+uint32_t flashReadUint(uint32_t sector, uint32_t index) {
+    return *(uint32_t*) (__SECTOR_ADDRS[sector] + 4 * index);
+}   
+
+float flashReadFloat(uint32_t sector, uint32_t index) {
+    return *(float*) (__SECTOR_ADDRS[sector] + 4 * index);
+}   
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PreferenceWriter/FlashWriter.h	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,39 @@
+#ifndef __FLASHWRITER_H
+#define __FLASHWRITER_H
+
+#include "stm32f4xx_flash.h"
+
+/* Base address of the Flash sectors */
+#define ADDR_FLASH_SECTOR_0     ((uint32_t)0x08000000) /* Base @ of Sector 0, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_1     ((uint32_t)0x08004000) /* Base @ of Sector 1, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_2     ((uint32_t)0x08008000) /* Base @ of Sector 2, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_3     ((uint32_t)0x0800C000) /* Base @ of Sector 3, 16 Kbytes */
+#define ADDR_FLASH_SECTOR_4     ((uint32_t)0x08010000) /* Base @ of Sector 4, 64 Kbytes */
+#define ADDR_FLASH_SECTOR_5     ((uint32_t)0x08020000) /* Base @ of Sector 5, 128 Kbytes */
+#define ADDR_FLASH_SECTOR_6     ((uint32_t)0x08040000) /* Base @ of Sector 6, 128 Kbytes */
+#define ADDR_FLASH_SECTOR_7     ((uint32_t)0x08060000) /* Base @ of Sector 7, 128 Kbytes */
+
+static uint32_t __SECTOR_ADDRS[] = {ADDR_FLASH_SECTOR_0, ADDR_FLASH_SECTOR_1, ADDR_FLASH_SECTOR_2, ADDR_FLASH_SECTOR_3,
+                             ADDR_FLASH_SECTOR_4, ADDR_FLASH_SECTOR_5, ADDR_FLASH_SECTOR_6, ADDR_FLASH_SECTOR_7};
+static uint32_t __SECTORS[] = {FLASH_Sector_0, FLASH_Sector_1, FLASH_Sector_2, FLASH_Sector_3,
+                             FLASH_Sector_4, FLASH_Sector_6, FLASH_Sector_6, FLASH_Sector_7};
+class FlashWriter {
+public:
+    FlashWriter(int sector);
+    void open();
+    bool ready();
+    void write(uint32_t index, int x);
+    void write(uint32_t index, unsigned int x);
+    void write(uint32_t index, float x);
+    void close();
+private:
+    uint32_t __base;
+    uint32_t __sector;
+    bool __ready;
+};
+
+int flashReadInt(uint32_t sector, uint32_t index);
+uint32_t flashReadUint(uint32_t sector, uint32_t index);
+float flashReadFloat(uint32_t sector, uint32_t index);
+    
+#endif
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PreferenceWriter/PreferenceWriter.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,56 @@
+#include "PreferenceWriter.h"
+#include "FlashWriter.h"
+
+#include "globals.h"
+
+float __float_reg[64];
+int __int_reg[64];
+
+PreferenceWriter::PreferenceWriter(uint32_t sector) {
+    writer = new FlashWriter(sector);
+    __sector = sector;
+    __ready = false;
+}
+
+void PreferenceWriter::open() {
+    writer->open();
+    __ready = true;
+}
+
+bool  PreferenceWriter::ready() {
+    return __ready;
+}
+
+void PreferenceWriter::write(int x, int index) {
+    __int_reg[index] = x;
+}
+
+void PreferenceWriter::write(float x, int index) {
+    __float_reg[index] = x;
+}
+
+void PreferenceWriter::flush() {
+    int offs;
+    for (offs = 0; offs < 64; offs++) {
+        writer->write(offs, __int_reg[offs]);
+    }
+    for (; offs < 128; offs++) {
+        writer->write(offs, __float_reg[offs - 64]);
+    }
+    __ready = false;
+}
+
+void PreferenceWriter::load() {
+    int offs;
+    for (offs = 0; offs < 64; offs++) {
+        __int_reg[offs] = flashReadInt(__sector, offs);
+    }
+    for(; offs < 128; offs++) {
+        __float_reg[offs - 64] = flashReadFloat(__sector, offs);
+    }
+}
+
+void PreferenceWriter::close() {
+    __ready = false;
+    writer->close();
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PreferenceWriter/PreferenceWriter.h	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,23 @@
+#ifndef __PREFERENCE_WRITER_H
+#define __PREFERENCE_WRITER_H
+
+#include "mbed.h"
+#include "FlashWriter.h"
+
+class PreferenceWriter {
+public:
+    PreferenceWriter(uint32_t sector);
+    void open();
+    bool ready();
+    void write(int x, int index);
+    void write(float x, int index);
+    void flush();
+    void load();
+    void close();
+private:
+    FlashWriter *writer;
+    uint32_t __sector;
+    bool __ready;
+};
+
+#endif
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PreferenceWriter/stm32f4xx_flash.c	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,1616 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_flash.c
+  * @author  MCD Application Team
+  * @version V1.7.1
+  * @date    20-May-2016
+  * @brief   This file provides firmware functions to manage the following 
+  *          functionalities of the FLASH peripheral:
+  *            + FLASH Interface configuration
+  *            + FLASH Memory Programming
+  *            + Option Bytes Programming
+  *            + Interrupts and flags management
+  *  
+ @verbatim    
+ ===============================================================================
+                        ##### How to use this driver #####
+ ===============================================================================
+    [..]                             
+      This driver provides functions to configure and program the FLASH memory 
+      of all STM32F4xx devices. These functions are split in 4 groups:
+   
+      (#) FLASH Interface configuration functions: this group includes the
+          management of the following features:
+        (++) Set the latency
+        (++) Enable/Disable the prefetch buffer
+        (++) Enable/Disable the Instruction cache and the Data cache
+        (++) Reset the Instruction cache and the Data cache
+    
+      (#) FLASH Memory Programming functions: this group includes all needed
+          functions to erase and program the main memory:
+        (++) Lock and Unlock the FLASH interface
+        (++) Erase function: Erase sector, erase all sectors
+        (++) Program functions: byte, half word, word and double word
+    
+      (#) Option Bytes Programming functions: this group includes all needed
+          functions to manage the Option Bytes:
+        (++) Set/Reset the write protection
+        (++) Set the Read protection Level
+        (++) Set the BOR level
+        (++) Program the user Option Bytes
+        (++) Launch the Option Bytes loader
+    
+      (#) Interrupts and flags management functions: this group 
+          includes all needed functions to:
+        (++) Enable/Disable the FLASH interrupt sources
+        (++) Get flags status
+        (++) Clear flags
+        (++) Get FLASH operation status
+        (++) Wait for last FLASH operation   
+ @endverbatim
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+ 
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx_flash.h"
+ 
+/** @addtogroup STM32F4xx_StdPeriph_Driver
+  * @{
+  */
+ 
+/** @defgroup FLASH 
+  * @brief FLASH driver modules
+  * @{
+  */ 
+ 
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/ 
+#define SECTOR_MASK               ((uint32_t)0xFFFFFF07)
+ 
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+ 
+/** @defgroup FLASH_Private_Functions
+  * @{
+  */ 
+ 
+/** @defgroup FLASH_Group1 FLASH Interface configuration functions
+  *  @brief   FLASH Interface configuration functions 
+ *
+ 
+@verbatim   
+ ===============================================================================
+              ##### FLASH Interface configuration functions #####
+ ===============================================================================
+    [..]
+      This group includes the following functions:
+      (+) void FLASH_SetLatency(uint32_t FLASH_Latency)
+          To correctly read data from FLASH memory, the number of wait states (LATENCY) 
+          must be correctly programmed according to the frequency of the CPU clock 
+          (HCLK) and the supply voltage of the device.
+    [..]      
+      For STM32F405xx/07xx and STM32F415xx/17xx devices
+ +-------------------------------------------------------------------------------------+
+ | Latency       |                HCLK clock frequency (MHz)                           |
+ |               |---------------------------------------------------------------------|
+ |               | voltage range  | voltage range  | voltage range   | voltage range   |
+ |               | 2.7 V - 3.6 V  | 2.4 V - 2.7 V  | 2.1 V - 2.4 V   | 1.8 V - 2.1 V   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |0WS(1CPU cycle)|0 < HCLK <= 30  |0 < HCLK <= 24  |0 < HCLK <= 22   |0 < HCLK <= 20   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |1WS(2CPU cycle)|30 < HCLK <= 60 |24 < HCLK <= 48 |22 < HCLK <= 44  |20 < HCLK <= 40  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |2WS(3CPU cycle)|60 < HCLK <= 90 |48 < HCLK <= 72 |44 < HCLK <= 66  |40 < HCLK <= 60  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |3WS(4CPU cycle)|90 < HCLK <= 120|72 < HCLK <= 96 |66 < HCLK <= 88  |60 < HCLK <= 80  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |4WS(5CPU cycle)|120< HCLK <= 150|96 < HCLK <= 120|88 < HCLK <= 110 |80 < HCLK <= 100 |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |5WS(6CPU cycle)|150< HCLK <= 168|120< HCLK <= 144|110 < HCLK <= 132|100 < HCLK <= 120|
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |6WS(7CPU cycle)|      NA        |144< HCLK <= 168|132 < HCLK <= 154|120 < HCLK <= 140|
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |7WS(8CPU cycle)|      NA        |      NA        |154 < HCLK <= 168|140 < HCLK <= 160|
+ +---------------|----------------|----------------|-----------------|-----------------+
+ 
+    [..]      
+      For STM32F42xxx/43xxx devices
+ +-------------------------------------------------------------------------------------+
+ | Latency       |                HCLK clock frequency (MHz)                           |
+ |               |---------------------------------------------------------------------|
+ |               | voltage range  | voltage range  | voltage range   | voltage range   |
+ |               | 2.7 V - 3.6 V  | 2.4 V - 2.7 V  | 2.1 V - 2.4 V   | 1.8 V - 2.1 V   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |0WS(1CPU cycle)|0 < HCLK <= 30  |0 < HCLK <= 24  |0 < HCLK <= 22   |0 < HCLK <= 20   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |1WS(2CPU cycle)|30 < HCLK <= 60 |24 < HCLK <= 48 |22 < HCLK <= 44  |20 < HCLK <= 40  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |2WS(3CPU cycle)|60 < HCLK <= 90 |48 < HCLK <= 72 |44 < HCLK <= 66  |40 < HCLK <= 60  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |3WS(4CPU cycle)|90 < HCLK <= 120|72 < HCLK <= 96 |66 < HCLK <= 88  |60 < HCLK <= 80  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |4WS(5CPU cycle)|120< HCLK <= 150|96 < HCLK <= 120|88 < HCLK <= 110 |80 < HCLK <= 100 |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |5WS(6CPU cycle)|120< HCLK <= 180|120< HCLK <= 144|110 < HCLK <= 132|100 < HCLK <= 120|
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |6WS(7CPU cycle)|      NA        |144< HCLK <= 168|132 < HCLK <= 154|120 < HCLK <= 140|
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |7WS(8CPU cycle)|      NA        |168< HCLK <= 180|154 < HCLK <= 176|140 < HCLK <= 160|
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |8WS(9CPU cycle)|      NA        |      NA        |176 < HCLK <= 180|160 < HCLK <= 168|
+ +-------------------------------------------------------------------------------------+
+   
+    [..]
+    For STM32F401x devices
+ +-------------------------------------------------------------------------------------+
+ | Latency       |                HCLK clock frequency (MHz)                           |
+ |               |---------------------------------------------------------------------|
+ |               | voltage range  | voltage range  | voltage range   | voltage range   |
+ |               | 2.7 V - 3.6 V  | 2.4 V - 2.7 V  | 2.1 V - 2.4 V   | 1.8 V - 2.1 V   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |0WS(1CPU cycle)|0 < HCLK <= 30  |0 < HCLK <= 24  |0 < HCLK <= 22   |0 < HCLK <= 20   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |1WS(2CPU cycle)|30 < HCLK <= 60 |24 < HCLK <= 48 |22 < HCLK <= 44  |20 < HCLK <= 40  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |2WS(3CPU cycle)|60 < HCLK <= 84 |48 < HCLK <= 72 |44 < HCLK <= 66  |40 < HCLK <= 60  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |3WS(4CPU cycle)|      NA        |72 < HCLK <= 84 |66 < HCLK <= 84  |60 < HCLK <= 80  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |4WS(5CPU cycle)|      NA        |      NA        |      NA         |80 < HCLK <= 84  |
+ +-------------------------------------------------------------------------------------+
+ 
+    [..]
+    For STM32F410xx/STM32F411xE devices
+ +-------------------------------------------------------------------------------------+
+ | Latency       |                HCLK clock frequency (MHz)                           |
+ |               |---------------------------------------------------------------------|
+ |               | voltage range  | voltage range  | voltage range   | voltage range   |
+ |               | 2.7 V - 3.6 V  | 2.4 V - 2.7 V  | 2.1 V - 2.4 V   | 1.8 V - 2.1 V   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |0WS(1CPU cycle)|0 < HCLK <= 30  |0 < HCLK <= 24  |0 < HCLK <= 18   |0 < HCLK <= 16   |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |1WS(2CPU cycle)|30 < HCLK <= 64 |24 < HCLK <= 48 |18 < HCLK <= 36  |16 < HCLK <= 32  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |2WS(3CPU cycle)|64 < HCLK <= 90 |48 < HCLK <= 72 |36 < HCLK <= 54  |32 < HCLK <= 48  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |3WS(4CPU cycle)|90 < HCLK <= 100|72 < HCLK <= 96 |54 < HCLK <= 72  |48 < HCLK <= 64  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |4WS(5CPU cycle)|      NA        |96 < HCLK <= 100|72 < HCLK <= 90  |64 < HCLK <= 80  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |5WS(6CPU cycle)|      NA        |       NA       |90 < HCLK <= 100 |80 < HCLK <= 96  |
+ |---------------|----------------|----------------|-----------------|-----------------|
+ |6WS(7CPU cycle)|      NA        |       NA       |        NA       |96 < HCLK <= 100 |
+ +-------------------------------------------------------------------------------------+
+ 
+ [..]
+ +-------------------------------------------------------------------------------------------------------------------+
+ |               | voltage range  | voltage range  | voltage range   | voltage range   | voltage range 2.7 V - 3.6 V |
+ |               | 2.7 V - 3.6 V  | 2.4 V - 2.7 V  | 2.1 V - 2.4 V   | 1.8 V - 2.1 V   | with External Vpp = 9V      |
+ |---------------|----------------|----------------|-----------------|-----------------|-----------------------------|
+ |Max Parallelism|      x32       |               x16                |       x8        |          x64                |
+ |---------------|----------------|----------------|-----------------|-----------------|-----------------------------|
+ |PSIZE[1:0]     |      10        |               01                 |       00        |           11                |
+ +-------------------------------------------------------------------------------------------------------------------+
+ 
+      -@- On STM32F405xx/407xx and STM32F415xx/417xx devices: 
+           (++) when VOS = '0' Scale 2 mode, the maximum value of fHCLK = 144MHz. 
+           (++) when VOS = '1' Scale 1 mode, the maximum value of fHCLK = 168MHz. 
+          [..] 
+          On STM32F42xxx/43xxx devices:
+           (++) when VOS[1:0] = '0x01' Scale 3 mode, the maximum value of fHCLK is 120MHz.
+           (++) when VOS[1:0] = '0x10' Scale 2 mode, the maximum value of fHCLK is 144MHz if OverDrive OFF and 168MHz if OverDrive ON.
+           (++) when VOS[1:0] = '0x11' Scale 1 mode, the maximum value of fHCLK is 168MHz if OverDrive OFF and 180MHz if OverDrive ON. 
+          [..]
+          On STM32F401x devices:
+           (++) when VOS[1:0] = '0x01' Scale 3 mode, the maximum value of fHCLK is 60MHz.
+           (++) when VOS[1:0] = '0x10' Scale 2 mode, the maximum value of fHCLK is 84MHz.
+          [..]  
+          On STM32F410xx/STM32F411xE devices:
+           (++) when VOS[1:0] = '0x01' Scale 3 mode, the maximum value of fHCLK is 64MHz.
+           (++) when VOS[1:0] = '0x10' Scale 2 mode, the maximum value of fHCLK is 84MHz.
+           (++) when VOS[1:0] = '0x11' Scale 1 mode, the maximum value of fHCLK is 100MHz.
+ 
+        For more details please refer product DataSheet 
+           You can use PWR_MainRegulatorModeConfig() function to control VOS bits.
+ 
+      (+) void FLASH_PrefetchBufferCmd(FunctionalState NewState)
+      (+) void FLASH_InstructionCacheCmd(FunctionalState NewState)
+      (+) void FLASH_DataCacheCmd(FunctionalState NewState)
+      (+) void FLASH_InstructionCacheReset(void)
+      (+) void FLASH_DataCacheReset(void)
+      
+    [..]   
+      The unlock sequence is not needed for these functions.
+ 
+@endverbatim
+  * @{
+  */
+ 
+/**
+  * @brief  Sets the code latency value.  
+  * @param  FLASH_Latency: specifies the FLASH Latency value.
+  *          This parameter can be one of the following values:
+  *            @arg FLASH_Latency_0: FLASH Zero Latency cycle
+  *            @arg FLASH_Latency_1: FLASH One Latency cycle
+  *            @arg FLASH_Latency_2: FLASH Two Latency cycles
+  *            @arg FLASH_Latency_3: FLASH Three Latency cycles
+  *            @arg FLASH_Latency_4: FLASH Four Latency cycles 
+  *            @arg FLASH_Latency_5: FLASH Five Latency cycles 
+  *            @arg FLASH_Latency_6: FLASH Six Latency cycles
+  *            @arg FLASH_Latency_7: FLASH Seven Latency cycles 
+  *            @arg FLASH_Latency_8: FLASH Eight Latency cycles
+  *            @arg FLASH_Latency_9: FLASH Nine Latency cycles
+  *            @arg FLASH_Latency_10: FLASH Teen Latency cycles 
+  *            @arg FLASH_Latency_11: FLASH Eleven Latency cycles 
+  *            @arg FLASH_Latency_12: FLASH Twelve Latency cycles
+  *            @arg FLASH_Latency_13: FLASH Thirteen Latency cycles
+  *            @arg FLASH_Latency_14: FLASH Fourteen Latency cycles
+  *            @arg FLASH_Latency_15: FLASH Fifteen Latency cycles 
+  *              
+  * @note For STM32F405xx/407xx, STM32F415xx/417xx, STM32F401xx/411xE and STM32F412xG devices
+  *       this parameter can be a value between FLASH_Latency_0 and FLASH_Latency_7.
+  *
+  * @note For STM32F42xxx/43xxx devices this parameter can be a value between 
+  *       FLASH_Latency_0 and FLASH_Latency_15. 
+  *         
+  * @retval None
+  */
+void FLASH_SetLatency(uint32_t FLASH_Latency)
+{
+  /* Check the parameters */
+  assert_param(IS_FLASH_LATENCY(FLASH_Latency));
+  
+  /* Perform Byte access to FLASH_ACR[8:0] to set the Latency value */
+  *(__IO uint8_t *)ACR_BYTE0_ADDRESS = (uint8_t)FLASH_Latency;
+}
+ 
+/**
+  * @brief  Enables or disables the Prefetch Buffer.
+  * @param  NewState: new state of the Prefetch Buffer.
+  *          This parameter  can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void FLASH_PrefetchBufferCmd(FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  /* Enable or disable the Prefetch Buffer */
+  if(NewState != DISABLE)
+  {
+    FLASH->ACR |= FLASH_ACR_PRFTEN;
+  }
+  else
+  {
+    FLASH->ACR &= (~FLASH_ACR_PRFTEN);
+  }
+}
+ 
+/**
+  * @brief  Enables or disables the Instruction Cache feature.
+  * @param  NewState: new state of the Instruction Cache.
+  *          This parameter  can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void FLASH_InstructionCacheCmd(FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  if(NewState != DISABLE)
+  {
+    FLASH->ACR |= FLASH_ACR_ICEN;
+  }
+  else
+  {
+    FLASH->ACR &= (~FLASH_ACR_ICEN);
+  }
+}
+ 
+/**
+  * @brief  Enables or disables the Data Cache feature.
+  * @param  NewState: new state of the Data Cache.
+  *          This parameter  can be: ENABLE or DISABLE.
+  * @retval None
+  */
+void FLASH_DataCacheCmd(FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+  
+  if(NewState != DISABLE)
+  {
+    FLASH->ACR |= FLASH_ACR_DCEN;
+  }
+  else
+  {
+    FLASH->ACR &= (~FLASH_ACR_DCEN);
+  }
+}
+ 
+/**
+  * @brief  Resets the Instruction Cache.
+  * @note   This function must be used only when the Instruction Cache is disabled.  
+  * @param  None
+  * @retval None
+  */
+void FLASH_InstructionCacheReset(void)
+{
+  FLASH->ACR |= FLASH_ACR_ICRST;
+}
+ 
+/**
+  * @brief  Resets the Data Cache.
+  * @note   This function must be used only when the Data Cache is disabled.  
+  * @param  None
+  * @retval None
+  */
+void FLASH_DataCacheReset(void)
+{
+  FLASH->ACR |= FLASH_ACR_DCRST;
+}
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup FLASH_Group2 FLASH Memory Programming functions
+ *  @brief   FLASH Memory Programming functions
+ *
+@verbatim   
+ ===============================================================================
+                ##### FLASH Memory Programming functions #####
+ ===============================================================================   
+    [..]
+      This group includes the following functions:
+      (+) void FLASH_Unlock(void)
+      (+) void FLASH_Lock(void)
+      (+) FLASH_Status FLASH_EraseSector(uint32_t FLASH_Sector, uint8_t VoltageRange)
+      (+) FLASH_Status FLASH_EraseAllSectors(uint8_t VoltageRange)       
+      (+) FLASH_Status FLASH_ProgramDoubleWord(uint32_t Address, uint64_t Data)
+      (+) FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data)
+      (+) FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
+      (+) FLASH_Status FLASH_ProgramByte(uint32_t Address, uint8_t Data)
+          The following functions can be used only for STM32F42xxx/43xxx devices. 
+      (+) FLASH_Status FLASH_EraseAllBank1Sectors(uint8_t VoltageRange)
+      (+) FLASH_Status FLASH_EraseAllBank2Sectors(uint8_t VoltageRange)    
+    [..]   
+      Any operation of erase or program should follow these steps:
+      (#) Call the FLASH_Unlock() function to enable the FLASH control register access
+ 
+      (#) Call the desired function to erase sector(s) or program data
+ 
+      (#) Call the FLASH_Lock() function to disable the FLASH control register access
+          (recommended to protect the FLASH memory against possible unwanted operation)
+    
+@endverbatim
+  * @{
+  */
+ 
+/**
+  * @brief  Unlocks the FLASH control register access
+  * @param  None
+  * @retval None
+  */
+void FLASH_Unlock(void)
+{
+  if((FLASH->CR & FLASH_CR_LOCK) != RESET)
+  {
+    /* Authorize the FLASH Registers access */
+    FLASH->KEYR = FLASH_KEY1;
+    FLASH->KEYR = FLASH_KEY2;
+  }  
+}
+ 
+/**
+  * @brief  Locks the FLASH control register access
+  * @param  None
+  * @retval None
+  */
+void FLASH_Lock(void)
+{
+  /* Set the LOCK Bit to lock the FLASH Registers access */
+  FLASH->CR |= FLASH_CR_LOCK;
+}
+ 
+/**
+  * @brief  Erases a specified FLASH Sector.
+  *
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one.
+  *
+  * @param  FLASH_Sector: The Sector number to be erased.
+  *
+  *  @note  For STM32F405xx/407xx and STM32F415xx/417xx devices this parameter can 
+  *         be a value between FLASH_Sector_0 and FLASH_Sector_11.
+  *
+  *         For STM32F42xxx/43xxx devices this parameter can be a value between 
+  *         FLASH_Sector_0 and FLASH_Sector_23.
+  *
+  *         For STM32F401xx devices this parameter can be a value between 
+  *         FLASH_Sector_0 and FLASH_Sector_5.
+  *
+  *         For STM32F411xE and STM32F412xG devices this parameter can be a value between 
+  *         FLASH_Sector_0 and FLASH_Sector_7.
+  *
+  *         For STM32F410xx devices this parameter can be a value between 
+  *         FLASH_Sector_0 and FLASH_Sector_4.
+  *
+  * @param  VoltageRange: The device voltage range which defines the erase parallelism.  
+  *          This parameter can be one of the following values:
+  *            @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V, 
+  *                                  the operation will be done by byte (8-bit) 
+  *            @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
+  *                                  the operation will be done by half word (16-bit)
+  *            @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
+  *                                  the operation will be done by word (32-bit)
+  *            @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, 
+  *                                  the operation will be done by double word (64-bit)
+  *       
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_EraseSector(uint32_t FLASH_Sector, uint8_t VoltageRange)
+{
+  uint32_t tmp_psize = 0x0;
+  FLASH_Status status = FLASH_COMPLETE2;
+ 
+  /* Check the parameters */
+  assert_param(IS_FLASH_SECTOR(FLASH_Sector));
+  assert_param(IS_VOLTAGERANGE(VoltageRange));
+  
+  if(VoltageRange == VoltageRange_1)
+  {
+     tmp_psize = FLASH_PSIZE_BYTE;
+  }
+  else if(VoltageRange == VoltageRange_2)
+  {
+    tmp_psize = FLASH_PSIZE_HALF_WORD;
+  }
+  else if(VoltageRange == VoltageRange_3)
+  {
+    tmp_psize = FLASH_PSIZE_WORD;
+  }
+  else
+  {
+    tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
+  }
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  
+  if(status == FLASH_COMPLETE2)
+  { 
+    /* if the previous operation is completed, proceed to erase the sector */
+    FLASH->CR &= CR_PSIZE_MASK;
+    FLASH->CR |= tmp_psize;
+    FLASH->CR &= SECTOR_MASK;
+    FLASH->CR |= FLASH_CR_SER | FLASH_Sector;
+    FLASH->CR |= FLASH_CR_STRT;
+    
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+    
+    /* if the erase operation is completed, disable the SER Bit */
+    FLASH->CR &= (~FLASH_CR_SER);
+    FLASH->CR &= SECTOR_MASK; 
+  }
+  /* Return the Erase Status */
+  return status;
+}
+ 
+/**
+  * @brief  Erases all FLASH Sectors.
+  *
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one.
+  *  
+  * @param  VoltageRange: The device voltage range which defines the erase parallelism.  
+  *          This parameter can be one of the following values:
+  *            @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V, 
+  *                                  the operation will be done by byte (8-bit) 
+  *            @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
+  *                                  the operation will be done by half word (16-bit)
+  *            @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
+  *                                  the operation will be done by word (32-bit)
+  *            @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, 
+  *                                  the operation will be done by double word (64-bit)
+  *       
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_EraseAllSectors(uint8_t VoltageRange)
+{
+  uint32_t tmp_psize = 0x0;
+  FLASH_Status status = FLASH_COMPLETE2;
+  
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  assert_param(IS_VOLTAGERANGE(VoltageRange));
+  
+  if(VoltageRange == VoltageRange_1)
+  {
+     tmp_psize = FLASH_PSIZE_BYTE;
+  }
+  else if(VoltageRange == VoltageRange_2)
+  {
+    tmp_psize = FLASH_PSIZE_HALF_WORD;
+  }
+  else if(VoltageRange == VoltageRange_3)
+  {
+    tmp_psize = FLASH_PSIZE_WORD;
+  }
+  else
+  {
+    tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
+  }  
+  if(status == FLASH_COMPLETE2)
+  {
+    /* if the previous operation is completed, proceed to erase all sectors */
+#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx)
+    FLASH->CR &= CR_PSIZE_MASK;
+    FLASH->CR |= tmp_psize;
+    FLASH->CR |= (FLASH_CR_MER1 | FLASH_CR_MER2);
+    FLASH->CR |= FLASH_CR_STRT;
+    
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the erase operation is completed, disable the MER Bit */
+    FLASH->CR &= ~(FLASH_CR_MER1 | FLASH_CR_MER2);
+#endif /* STM32F427_437xx ||  STM32F429_439xx ||  STM32F469_479xx */
+ 
+#if defined(STM32F40_41xxx) || defined(STM32F401xx) || defined(STM32F410xx) || defined(STM32F411xE) || defined(STM32F412xG) || defined(STM32F446xx)
+    FLASH->CR &= CR_PSIZE_MASK;
+    FLASH->CR |= tmp_psize;
+    FLASH->CR |= FLASH_CR_MER;
+    FLASH->CR |= FLASH_CR_STRT;
+    
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the erase operation is completed, disable the MER Bit */
+    FLASH->CR &= (~FLASH_CR_MER);
+#endif /* STM32F40_41xxx || STM32F401xx || STM32F410xx || STM32F411xE || STM32F412xG || STM32F446xx */
+ 
+  }   
+  /* Return the Erase Status */
+  return status;
+}
+ 
+/**
+  * @brief  Erases all FLASH Sectors in Bank 1.
+  *
+  * @note   This function can be used only for STM32F42xxx/43xxx devices.
+  *      
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one. 
+  *  
+  * @param  VoltageRange: The device voltage range which defines the erase parallelism.  
+  *          This parameter can be one of the following values:
+  *            @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V, 
+  *                                  the operation will be done by byte (8-bit) 
+  *            @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
+  *                                  the operation will be done by half word (16-bit)
+  *            @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
+  *                                  the operation will be done by word (32-bit)
+  *            @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, 
+  *                                  the operation will be done by double word (64-bit)
+  *       
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_EraseAllBank1Sectors(uint8_t VoltageRange)
+{
+  uint32_t tmp_psize = 0x0;
+  FLASH_Status status = FLASH_COMPLETE2;
+  
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  assert_param(IS_VOLTAGERANGE(VoltageRange));
+  
+  if(VoltageRange == VoltageRange_1)
+  {
+     tmp_psize = FLASH_PSIZE_BYTE;
+  }
+  else if(VoltageRange == VoltageRange_2)
+  {
+    tmp_psize = FLASH_PSIZE_HALF_WORD;
+  }
+  else if(VoltageRange == VoltageRange_3)
+  {
+    tmp_psize = FLASH_PSIZE_WORD;
+  }
+  else
+  {
+    tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
+  }  
+  if(status == FLASH_COMPLETE2)
+  {
+    /* if the previous operation is completed, proceed to erase all sectors */
+     FLASH->CR &= CR_PSIZE_MASK;
+     FLASH->CR |= tmp_psize;
+     FLASH->CR |= FLASH_CR_MER1;
+     FLASH->CR |= FLASH_CR_STRT;
+    
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the erase operation is completed, disable the MER Bit */
+    FLASH->CR &= (~FLASH_CR_MER1);
+ 
+  }   
+  /* Return the Erase Status */
+  return status;
+}
+ 
+ 
+/**
+  * @brief  Erases all FLASH Sectors in Bank 2.
+  *
+  * @note   This function can be used only for STM32F42xxx/43xxx devices.
+  *     
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one.
+  *     
+  * @param  VoltageRange: The device voltage range which defines the erase parallelism.  
+  *          This parameter can be one of the following values:
+  *            @arg VoltageRange_1: when the device voltage range is 1.8V to 2.1V, 
+  *                                  the operation will be done by byte (8-bit) 
+  *            @arg VoltageRange_2: when the device voltage range is 2.1V to 2.7V,
+  *                                  the operation will be done by half word (16-bit)
+  *            @arg VoltageRange_3: when the device voltage range is 2.7V to 3.6V,
+  *                                  the operation will be done by word (32-bit)
+  *            @arg VoltageRange_4: when the device voltage range is 2.7V to 3.6V + External Vpp, 
+  *                                  the operation will be done by double word (64-bit)
+  *       
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_EraseAllBank2Sectors(uint8_t VoltageRange)
+{
+  uint32_t tmp_psize = 0x0;
+  FLASH_Status status = FLASH_COMPLETE2;
+  
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  assert_param(IS_VOLTAGERANGE(VoltageRange));
+  
+  if(VoltageRange == VoltageRange_1)
+  {
+     tmp_psize = FLASH_PSIZE_BYTE;
+  }
+  else if(VoltageRange == VoltageRange_2)
+  {
+    tmp_psize = FLASH_PSIZE_HALF_WORD;
+  }
+  else if(VoltageRange == VoltageRange_3)
+  {
+    tmp_psize = FLASH_PSIZE_WORD;
+  }
+  else
+  {
+    tmp_psize = FLASH_PSIZE_DOUBLE_WORD;
+  }  
+  if(status == FLASH_COMPLETE2)
+  {
+    /* if the previous operation is completed, proceed to erase all sectors */
+     FLASH->CR &= CR_PSIZE_MASK;
+     FLASH->CR |= tmp_psize;
+     FLASH->CR |= FLASH_CR_MER2;
+     FLASH->CR |= FLASH_CR_STRT;
+    
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the erase operation is completed, disable the MER Bit */
+    FLASH->CR &= (~FLASH_CR_MER2);
+ 
+  }   
+  /* Return the Erase Status */
+  return status;
+}
+ 
+/**
+  * @brief  Programs a double word (64-bit) at a specified address.
+  * @note   This function must be used when the device voltage range is from
+  *         2.7V to 3.6V and an External Vpp is present.
+  *
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one.
+  *  
+  * @param  Address: specifies the address to be programmed.
+  * @param  Data: specifies the data to be programmed.
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_ProgramDoubleWord(uint32_t Address, uint64_t Data)
+{
+  FLASH_Status status = FLASH_COMPLETE2;
+ 
+  /* Check the parameters */
+  assert_param(IS_FLASH_ADDRESS(Address));
+ 
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  
+  if(status == FLASH_COMPLETE2)
+  {
+    /* if the previous operation is completed, proceed to program the new data */
+    FLASH->CR &= CR_PSIZE_MASK;
+    FLASH->CR |= FLASH_PSIZE_DOUBLE_WORD;
+    FLASH->CR |= FLASH_CR_PG;
+  
+    *(__IO uint64_t*)Address = Data;
+        
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the program operation is completed, disable the PG Bit */
+    FLASH->CR &= (~FLASH_CR_PG);
+  } 
+  /* Return the Program Status */
+  return status;
+}
+ 
+/**
+  * @brief  Programs a word (32-bit) at a specified address.
+  *
+  * @note   This function must be used when the device voltage range is from 2.7V to 3.6V. 
+  *
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one.
+  *  
+  * @param  Address: specifies the address to be programmed.
+  *         This parameter can be any address in Program memory zone or in OTP zone.  
+  * @param  Data: specifies the data to be programmed.
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data)
+{
+  FLASH_Status status = FLASH_COMPLETE2;
+ 
+  /* Check the parameters */
+  assert_param(IS_FLASH_ADDRESS(Address));
+ 
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  
+  if(status == FLASH_COMPLETE2)
+  {
+    /* if the previous operation is completed, proceed to program the new data */
+    FLASH->CR &= CR_PSIZE_MASK;
+    FLASH->CR |= FLASH_PSIZE_WORD;
+    FLASH->CR |= FLASH_CR_PG;
+  
+    *(__IO uint32_t*)Address = Data;
+        
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the program operation is completed, disable the PG Bit */
+    FLASH->CR &= (~FLASH_CR_PG);
+  } 
+  /* Return the Program Status */
+  return status;
+}
+ 
+/**
+  * @brief  Programs a half word (16-bit) at a specified address. 
+  * @note   This function must be used when the device voltage range is from 2.1V to 3.6V. 
+  *
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one.
+  * 
+  * @param  Address: specifies the address to be programmed.
+  *         This parameter can be any address in Program memory zone or in OTP zone.  
+  * @param  Data: specifies the data to be programmed.
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
+{
+  FLASH_Status status = FLASH_COMPLETE2;
+ 
+  /* Check the parameters */
+  assert_param(IS_FLASH_ADDRESS(Address));
+ 
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  
+  if(status == FLASH_COMPLETE2)
+  {
+    /* if the previous operation is completed, proceed to program the new data */
+    FLASH->CR &= CR_PSIZE_MASK;
+    FLASH->CR |= FLASH_PSIZE_HALF_WORD;
+    FLASH->CR |= FLASH_CR_PG;
+  
+    *(__IO uint16_t*)Address = Data;
+        
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the program operation is completed, disable the PG Bit */
+    FLASH->CR &= (~FLASH_CR_PG);
+  } 
+  /* Return the Program Status */
+  return status;
+}
+ 
+/**
+  * @brief  Programs a byte (8-bit) at a specified address.
+  * @note   This function can be used within all the device supply voltage ranges.  
+  *
+  * @note   If an erase and a program operations are requested simultaneously,    
+  *         the erase operation is performed before the program one.
+  * 
+  * @param  Address: specifies the address to be programmed.
+  *         This parameter can be any address in Program memory zone or in OTP zone.  
+  * @param  Data: specifies the data to be programmed.
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_ProgramByte(uint32_t Address, uint8_t Data)
+{
+  FLASH_Status status = FLASH_COMPLETE2;
+ 
+  /* Check the parameters */
+  assert_param(IS_FLASH_ADDRESS(Address));
+ 
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  
+  if(status == FLASH_COMPLETE2)
+  {
+    /* if the previous operation is completed, proceed to program the new data */
+    FLASH->CR &= CR_PSIZE_MASK;
+    FLASH->CR |= FLASH_PSIZE_BYTE;
+    FLASH->CR |= FLASH_CR_PG;
+  
+    *(__IO uint8_t*)Address = Data;
+        
+    /* Wait for last operation to be completed */
+    status = FLASH_WaitForLastOperation2();
+ 
+    /* if the program operation is completed, disable the PG Bit */
+    FLASH->CR &= (~FLASH_CR_PG);
+  } 
+ 
+  /* Return the Program Status */
+  return status;
+}
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup FLASH_Group3 Option Bytes Programming functions
+ *  @brief   Option Bytes Programming functions 
+ *
+@verbatim   
+ ===============================================================================
+                ##### Option Bytes Programming functions #####
+ ===============================================================================  
+    [..]
+      This group includes the following functions:
+      (+) void FLASH_OB_Unlock(void)
+      (+) void FLASH_OB_Lock(void)
+      (+) void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState)
+      (+) void FLASH_OB_WRP1Config(uint32_t OB_WRP, FunctionalState NewState)  
+      (+) void FLASH_OB_PCROPSelectionConfig(uint8_t OB_PCROPSelect)
+      (+) void FLASH_OB_PCROPConfig(uint32_t OB_PCROP, FunctionalState NewState)
+      (+) void FLASH_OB_PCROP1Config(uint32_t OB_PCROP, FunctionalState NewState) 
+      (+) void FLASH_OB_RDPConfig(uint8_t OB_RDP)
+      (+) void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
+      (+) void FLASH_OB_BORConfig(uint8_t OB_BOR)
+      (+) FLASH_Status FLASH_ProgramOTP(uint32_t Address, uint32_t Data)
+      (+) FLASH_Status FLASH_OB_Launch(void)
+      (+) uint32_t FLASH_OB_GetUser(void)
+      (+) uint8_t FLASH_OB_GetWRP(void)
+      (+) uint8_t FLASH_OB_GetWRP1(void)
+      (+) uint8_t FLASH_OB_GetPCROP(void)
+      (+) uint8_t FLASH_OB_GetPCROP1(void)
+      (+) uint8_t FLASH_OB_GetRDP(void)
+      (+) uint8_t FLASH_OB_GetBOR(void)
+    [..]  
+      The following function can be used only for STM32F42xxx/43xxx devices. 
+      (+) void FLASH_OB_BootConfig(uint8_t OB_BOOT)
+    [..]   
+     Any operation of erase or program should follow these steps:
+      (#) Call the FLASH_OB_Unlock() function to enable the FLASH option control 
+          register access
+ 
+      (#) Call one or several functions to program the desired Option Bytes:
+        (++) void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState) 
+             => to Enable/Disable the desired sector write protection
+        (++) void FLASH_OB_RDPConfig(uint8_t OB_RDP) => to set the desired read 
+             Protection Level
+        (++) void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY) 
+             => to configure the user Option Bytes.
+        (++) void FLASH_OB_BORConfig(uint8_t OB_BOR) => to set the BOR Level             
+ 
+      (#) Once all needed Option Bytes to be programmed are correctly written, 
+          call the FLASH_OB_Launch() function to launch the Option Bytes 
+          programming process.
+     
+      -@- When changing the IWDG mode from HW to SW or from SW to HW, a system 
+          reset is needed to make the change effective.  
+ 
+      (#) Call the FLASH_OB_Lock() function to disable the FLASH option control 
+          register access (recommended to protect the Option Bytes against 
+          possible unwanted operations)
+    
+@endverbatim
+  * @{
+  */
+ 
+/**
+  * @brief  Unlocks the FLASH Option Control Registers access.
+  * @param  None
+  * @retval None
+  */
+void FLASH_OB_Unlock(void)
+{
+  if((FLASH->OPTCR & FLASH_OPTCR_OPTLOCK) != RESET)
+  {
+    /* Authorizes the Option Byte register programming */
+    FLASH->OPTKEYR = FLASH_OPT_KEY1;
+    FLASH->OPTKEYR = FLASH_OPT_KEY2;
+  }  
+}
+ 
+/**
+  * @brief  Locks the FLASH Option Control Registers access.
+  * @param  None
+  * @retval None
+  */
+void FLASH_OB_Lock(void)
+{
+  /* Set the OPTLOCK Bit to lock the FLASH Option Byte Registers access */
+  FLASH->OPTCR |= FLASH_OPTCR_OPTLOCK;
+}
+ 
+/**
+  * @brief  Enables or disables the write protection of the desired sectors, for the first
+  *         1 Mb of the Flash  
+  *
+  * @note   When the memory read protection level is selected (RDP level = 1), 
+  *         it is not possible to program or erase the flash sector i if CortexM4  
+  *         debug features are connected or boot code is executed in RAM, even if nWRPi = 1 
+  * @note   Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1).   
+  * 
+  * @param  OB_WRP: specifies the sector(s) to be write protected or unprotected.
+  *          This parameter can be one of the following values:
+  *            @arg OB_WRP: A value between OB_WRP_Sector0 and OB_WRP_Sector11                      
+  *            @arg OB_WRP_Sector_All
+  * @param  Newstate: new state of the Write Protection.
+  *          This parameter can be: ENABLE or DISABLE.
+  * @retval None  
+  */
+void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState)
+{ 
+  FLASH_Status status = FLASH_COMPLETE2;
+  
+  /* Check the parameters */
+  assert_param(IS_OB_WRP(OB_WRP));
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+    
+  status = FLASH_WaitForLastOperation2();
+ 
+  if(status == FLASH_COMPLETE2)
+  { 
+    if(NewState != DISABLE)
+    {
+      *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS &= (~OB_WRP);
+    }
+    else
+    {
+      *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS |= (uint16_t)OB_WRP;
+    }
+  }
+}
+ 
+/**
+  * @brief  Enables or disables the write protection of the desired sectors, for the second
+  *         1 Mb of the Flash  
+  *           
+  * @note   This function can be used only for STM32F42xxx/43xxx devices.
+  *   
+  * @note   When the memory read out protection is selected (RDP level = 1), 
+  *         it is not possible to program or erase the flash sector i if CortexM4  
+  *         debug features are connected or boot code is executed in RAM, even if nWRPi = 1 
+  * @note   Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1).      
+  * 
+  * @param  OB_WRP: specifies the sector(s) to be write protected or unprotected.
+  *          This parameter can be one of the following values:
+  *            @arg OB_WRP: A value between OB_WRP_Sector12 and OB_WRP_Sector23
+  *            @arg OB_WRP_Sector_All                        
+  * @param  Newstate: new state of the Write Protection.
+  *          This parameter can be: ENABLE or DISABLE.
+  * @retval None  
+  */
+void FLASH_OB_WRP1Config(uint32_t OB_WRP, FunctionalState NewState)
+{ 
+  FLASH_Status status = FLASH_COMPLETE2;
+  
+  /* Check the parameters */
+  assert_param(IS_OB_WRP(OB_WRP));
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+    
+  status = FLASH_WaitForLastOperation2();
+ 
+  if(status == FLASH_COMPLETE2)
+  { 
+    if(NewState != DISABLE)
+    {
+      *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS &= (~OB_WRP);
+    }
+    else
+    {
+      *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS |= (uint16_t)OB_WRP;
+    }
+  }
+}
+ 
+/**
+  * @brief  Select the Protection Mode (SPRMOD). 
+  * 
+  * @note   This function can be used only for STM32F42xxx/43xxx and STM32F401xx/411xE devices.       
+  * 
+  * @note   After PCROP activation, Option Byte modification is not possible. 
+  *         Exception made for the global Read Out Protection modification level (level1 to level0) 
+  * @note   Once SPRMOD bit is active unprotection of a protected sector is not possible 
+  *   
+  * @note   Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag
+  *   
+  * @note   Some Precautions should be taken when activating the PCROP feature :
+  *         The active value of nWRPi bits is inverted when PCROP mode is active, this means if SPRMOD = 1
+  *         and WRPi = 1 (default value), then the user sector i is read/write protected.
+  *         In order to avoid activation of PCROP Mode for undesired sectors, please follow the
+  *         below safety sequence :       
+  *         - Disable PCROP for all Sectors using FLASH_OB_PCROPConfig(OB_PCROP_Sector_All, DISABLE) function 
+  *           for Bank1 or FLASH_OB_PCROP1Config(OB_PCROP_Sector_All, DISABLE) function for Bank2   
+  *         - Enable PCROP for the desired Sector i using FLASH_OB_PCROPConfig(Sector i, ENABLE) function
+  *         - Activate the PCROP Mode FLASH_OB_PCROPSelectionConfig() function. 
+  * 
+  * @param  OB_PCROP:  Select the Protection Mode of nWPRi bits 
+  *          This parameter can be one of the following values:
+  *            @arg OB_PcROP_Disable: nWRPi control the write protection of respective user sectors.
+  *            @arg OB_PcROP_Enable: nWRPi control the  read&write protection (PCROP) of respective user sectors.
+  * @retval None
+  */
+void FLASH_OB_PCROPSelectionConfig(uint8_t OB_PcROP)
+{  
+  uint8_t optiontmp = 0xFF;
+      
+  /* Check the parameters */
+  assert_param(IS_OB_PCROP_SELECT(OB_PcROP));
+  
+  /* Mask SPRMOD bit */
+  optiontmp =  (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE3_ADDRESS) & (uint8_t)0x7F); 
+  /* Update Option Byte */
+  *(__IO uint8_t *)OPTCR_BYTE3_ADDRESS = (uint8_t)(OB_PcROP | optiontmp); 
+    
+}
+ 
+/**
+  * @brief  Enables or disables the read/write protection (PCROP) of the desired 
+  *         sectors, for the first 1 MB of the Flash.
+  *           
+  * @note   This function can be used only for STM32F42xxx/43xxx , STM32F401xx/411xE 
+  *         and STM32F412xG devices.
+  *   
+  * @param  OB_PCROP: specifies the sector(s) to be read/write protected or unprotected.
+  *          This parameter can be one of the following values:
+  *            @arg OB_PCROP: A value between OB_PCROP_Sector0 and OB_PCROP_Sector11 for 
+  *                           STM32F42xxx/43xxx devices and between OB_PCROP_Sector0 and 
+  *                           OB_PCROP_Sector5 for STM32F401xx/411xE devices.
+  *            @arg OB_PCROP_Sector_All
+  * @param  Newstate: new state of the Write Protection.
+  *          This parameter can be: ENABLE or DISABLE.
+  * @retval None  
+  */
+void FLASH_OB_PCROPConfig(uint32_t OB_PCROP, FunctionalState NewState)
+{ 
+  FLASH_Status status = FLASH_COMPLETE2;
+  
+  /* Check the parameters */
+  assert_param(IS_OB_PCROP(OB_PCROP));
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+    
+  status = FLASH_WaitForLastOperation2();
+ 
+  if(status == FLASH_COMPLETE2)
+  { 
+    if(NewState != DISABLE)
+    {
+      *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS |= (uint16_t)OB_PCROP;    
+    }
+    else
+    {
+      *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS &= (~OB_PCROP);
+    }
+  }
+}
+ 
+/**
+   * @brief Enables or disables the read/write protection (PCROP) of the desired 
+  *         sectors
+  *           
+  * @note   This function can be used only for STM32F42xxx/43xxx devices.
+  *   
+  * @param  OB_PCROP: specifies the sector(s) to be read/write protected or unprotected.
+  *          This parameter can be one of the following values:
+  *            @arg OB_PCROP: A value between OB_PCROP_Sector12 and OB_PCROP_Sector23 
+  *            @arg OB_PCROP_Sector_All
+  * @param  Newstate: new state of the Write Protection.
+  *          This parameter can be: ENABLE or DISABLE.
+  * @retval None  
+  */
+void FLASH_OB_PCROP1Config(uint32_t OB_PCROP, FunctionalState NewState)
+{ 
+  FLASH_Status status = FLASH_COMPLETE2;
+  
+  /* Check the parameters */
+  assert_param(IS_OB_PCROP(OB_PCROP));
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+    
+  status = FLASH_WaitForLastOperation2();
+ 
+  if(status == FLASH_COMPLETE2)
+  { 
+    if(NewState != DISABLE)
+    {
+      *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS |= (uint16_t)OB_PCROP;
+    }
+    else
+    {
+      *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS &= (~OB_PCROP);
+    }
+  }
+}
+ 
+ 
+/**
+  * @brief  Sets the read protection level.
+  * @param  OB_RDP: specifies the read protection level.
+  *          This parameter can be one of the following values:
+  *            @arg OB_RDP_Level_0: No protection
+  *            @arg OB_RDP_Level_1: Read protection of the memory
+  *            @arg OB_RDP_Level_2: Full chip protection
+  *   
+  * /!\ Warning /!\ When enabling OB_RDP level 2 it's no more possible to go back to level 1 or 0
+  *    
+  * @retval None
+  */
+void FLASH_OB_RDPConfig(uint8_t OB_RDP)
+{
+  FLASH_Status status = FLASH_COMPLETE2;
+ 
+  /* Check the parameters */
+  assert_param(IS_OB_RDP(OB_RDP));
+ 
+  status = FLASH_WaitForLastOperation2();
+ 
+  if(status == FLASH_COMPLETE2)
+  {
+    *(__IO uint8_t*)OPTCR_BYTE1_ADDRESS = OB_RDP;
+ 
+  }
+}
+ 
+/**
+  * @brief  Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY.    
+  * @param  OB_IWDG: Selects the IWDG mode
+  *          This parameter can be one of the following values:
+  *            @arg OB_IWDG_SW: Software IWDG selected
+  *            @arg OB_IWDG_HW: Hardware IWDG selected
+  * @param  OB_STOP: Reset event when entering STOP mode.
+  *          This parameter  can be one of the following values:
+  *            @arg OB_STOP_NoRST: No reset generated when entering in STOP
+  *            @arg OB_STOP_RST: Reset generated when entering in STOP
+  * @param  OB_STDBY: Reset event when entering Standby mode.
+  *          This parameter  can be one of the following values:
+  *            @arg OB_STDBY_NoRST: No reset generated when entering in STANDBY
+  *            @arg OB_STDBY_RST: Reset generated when entering in STANDBY
+  * @retval None
+  */
+void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY)
+{
+  uint8_t optiontmp = 0xFF;
+  FLASH_Status status = FLASH_COMPLETE2; 
+ 
+  /* Check the parameters */
+  assert_param(IS_OB_IWDG_SOURCE(OB_IWDG));
+  assert_param(IS_OB_STOP_SOURCE(OB_STOP));
+  assert_param(IS_OB_STDBY_SOURCE(OB_STDBY));
+ 
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+  
+  if(status == FLASH_COMPLETE2)
+  { 
+#if defined(STM32F427_437xx) || defined(STM32F429_439xx) || defined(STM32F469_479xx)
+    /* Mask OPTLOCK, OPTSTRT, BOR_LEV and BFB2 bits */
+    optiontmp =  (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE0_ADDRESS) & (uint8_t)0x1F);
+#endif /* STM32F427_437xx ||  STM32F429_439xx ||  STM32F469_479xx */
+ 
+#if defined(STM32F40_41xxx) || defined(STM32F401xx) || defined(STM32F410xx) || defined(STM32F411xE) || defined(STM32F446xx)
+    /* Mask OPTLOCK, OPTSTRT and BOR_LEV bits */
+    optiontmp =  (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE0_ADDRESS) & (uint8_t)0x0F); 
+#endif /* STM32F40_41xxx || STM32F401xx || STM32F410xx || STM32F411xE || STM32F446xx */ 
+ 
+    /* Update User Option Byte */
+    *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS = OB_IWDG | (uint8_t)(OB_STDBY | (uint8_t)(OB_STOP | ((uint8_t)optiontmp))); 
+  }  
+}
+ 
+/**
+  * @brief  Configure the Dual Bank Boot.
+  *   
+  * @note   This function can be used only for STM32F42xxx/43xxx devices.
+  *      
+  * @param  OB_BOOT: specifies the Dual Bank Boot Option byte.
+  *          This parameter can be one of the following values:
+  *            @arg OB_Dual_BootEnabled: Dual Bank Boot Enable
+  *            @arg OB_Dual_BootDisabled: Dual Bank Boot Disabled
+  * @retval None
+  */
+void FLASH_OB_BootConfig(uint8_t OB_BOOT)
+{
+  /* Check the parameters */
+  assert_param(IS_OB_BOOT(OB_BOOT));
+ 
+  /* Set Dual Bank Boot */
+  *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS &= (~FLASH_OPTCR_BFB2);
+  *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS |= OB_BOOT;
+ 
+}
+ 
+/**
+  * @brief  Sets the BOR Level. 
+  * @param  OB_BOR: specifies the Option Bytes BOR Reset Level.
+  *          This parameter can be one of the following values:
+  *            @arg OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V
+  *            @arg OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V
+  *            @arg OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V
+  *            @arg OB_BOR_OFF: Supply voltage ranges from 1.62 to 2.1 V
+  * @retval None
+  */
+void FLASH_OB_BORConfig(uint8_t OB_BOR)
+{
+  /* Check the parameters */
+  assert_param(IS_OB_BOR(OB_BOR));
+ 
+  /* Set the BOR Level */
+  *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS &= (~FLASH_OPTCR_BOR_LEV);
+  *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS |= OB_BOR;
+ 
+}
+ 
+/**
+  * @brief  Launch the option byte loading.
+  * @param  None
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_OB_Launch(void)
+{
+  FLASH_Status status = FLASH_COMPLETE2;
+ 
+  /* Set the OPTSTRT bit in OPTCR register */
+  *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS |= FLASH_OPTCR_OPTSTRT;
+ 
+  /* Wait for last operation to be completed */
+  status = FLASH_WaitForLastOperation2();
+ 
+  return status;
+}
+ 
+/**
+  * @brief  Returns the FLASH User Option Bytes values.
+  * @param  None
+  * @retval The FLASH User Option Bytes values: IWDG_SW(Bit0), RST_STOP(Bit1)
+  *         and RST_STDBY(Bit2).
+  */
+uint8_t FLASH_OB_GetUser(void)
+{
+  /* Return the User Option Byte */
+  return (uint8_t)(FLASH->OPTCR >> 5);
+}
+ 
+/**
+  * @brief  Returns the FLASH Write Protection Option Bytes value.
+  * @param  None
+  * @retval The FLASH Write Protection  Option Bytes value
+  */
+uint16_t FLASH_OB_GetWRP(void)
+{
+  /* Return the FLASH write protection Register value */
+  return (*(__IO uint16_t *)(OPTCR_BYTE2_ADDRESS));
+}
+ 
+/**
+  * @brief  Returns the FLASH Write Protection Option Bytes value.
+  *   
+  * @note   This function can be used only for STM32F42xxx/43xxx devices.
+  *   
+  * @param  None
+  * @retval The FLASH Write Protection  Option Bytes value
+  */
+uint16_t FLASH_OB_GetWRP1(void)
+{
+  /* Return the FLASH write protection Register value */
+  return (*(__IO uint16_t *)(OPTCR1_BYTE2_ADDRESS));
+}
+ 
+/**
+  * @brief  Returns the FLASH PC Read/Write Protection Option Bytes value.
+  *   
+  * @note   This function can be used only for STM32F42xxx/43xxx devices and STM32F401xx/411xE devices.
+  *   
+  * @param  None
+  * @retval The FLASH PC Read/Write Protection Option Bytes value
+  */
+uint16_t FLASH_OB_GetPCROP(void)
+{
+  /* Return the FLASH PC Read/write protection Register value */
+  return (*(__IO uint16_t *)(OPTCR_BYTE2_ADDRESS));
+}
+ 
+/**
+  * @brief  Returns the FLASH PC Read/Write Protection Option Bytes value.
+  *   
+  * @note   This function can be used only for STM32F42xxx/43xxx devices. 
+  *     
+  * @param  None
+  * @retval The FLASH PC Read/Write Protection Option Bytes value
+  */
+uint16_t FLASH_OB_GetPCROP1(void)
+{
+  /* Return the FLASH write protection Register value */
+  return (*(__IO uint16_t *)(OPTCR1_BYTE2_ADDRESS));
+}
+ 
+/**
+  * @brief  Returns the FLASH Read Protection level.
+  * @param  None
+  * @retval FLASH ReadOut Protection Status:
+  *           - SET, when OB_RDP_Level_1 or OB_RDP_Level_2 is set
+  *           - RESET, when OB_RDP_Level_0 is set
+  */
+FlagStatus FLASH_OB_GetRDP(void)
+{
+  FlagStatus readstatus = RESET;
+ 
+  if ((*(__IO uint8_t*)(OPTCR_BYTE1_ADDRESS) != (uint8_t)OB_RDP_Level_0))
+  {
+    readstatus = SET;
+  }
+  else
+  {
+    readstatus = RESET;
+  }
+  return readstatus;
+}
+ 
+/**
+  * @brief  Returns the FLASH BOR level.
+  * @param  None
+  * @retval The FLASH BOR level:
+  *           - OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V
+  *           - OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V
+  *           - OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V
+  *           - OB_BOR_OFF   : Supply voltage ranges from 1.62 to 2.1 V  
+  */
+uint8_t FLASH_OB_GetBOR(void)
+{
+  /* Return the FLASH BOR level */
+  return (uint8_t)(*(__IO uint8_t *)(OPTCR_BYTE0_ADDRESS) & (uint8_t)0x0C);
+}
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup FLASH_Group4 Interrupts and flags management functions
+ *  @brief   Interrupts and flags management functions
+ *
+@verbatim   
+ ===============================================================================
+              ##### Interrupts and flags management functions #####
+ ===============================================================================  
+@endverbatim
+  * @{
+  */
+ 
+/**
+  * @brief  Enables or disables the specified FLASH interrupts.
+  * @param  FLASH_IT: specifies the FLASH interrupt sources to be enabled or disabled.
+  *          This parameter can be any combination of the following values:
+  *            @arg FLASH_IT_ERR: FLASH Error Interrupt
+  *            @arg FLASH_IT_EOP: FLASH end of operation Interrupt
+  * @retval None 
+  */
+void FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState)
+{
+  /* Check the parameters */
+  assert_param(IS_FLASH_IT(FLASH_IT)); 
+  assert_param(IS_FUNCTIONAL_STATE(NewState));
+ 
+  if(NewState != DISABLE)
+  {
+    /* Enable the interrupt sources */
+    FLASH->CR |= FLASH_IT;
+  }
+  else
+  {
+    /* Disable the interrupt sources */
+    FLASH->CR &= ~(uint32_t)FLASH_IT;
+  }
+}
+ 
+/**
+  * @brief  Checks whether the specified FLASH flag is set or not.
+  * @param  FLASH_FLAG: specifies the FLASH flag to check.
+  *          This parameter can be one of the following values:
+  *            @arg FLASH_FLAG_EOP: FLASH End of Operation flag 
+  *            @arg FLASH_FLAG_OPERR: FLASH operation Error flag 
+  *            @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag 
+  *            @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag
+  *            @arg FLASH_FLAG_PGPERR: FLASH Programming Parallelism error flag
+  *            @arg FLASH_FLAG_PGSERR: FLASH Programming Sequence error flag
+  *            @arg FLASH_FLAG_RDERR: FLASH (PCROP) Read Protection error flag (STM32F42xx/43xxx and STM32F401xx/411xE devices) 
+  *            @arg FLASH_FLAG_BSY: FLASH Busy flag
+  * @retval The new state of FLASH_FLAG (SET or RESET).
+  */
+FlagStatus FLASH_GetFlagStatus(uint32_t FLASH_FLAG)
+{
+  FlagStatus bitstatus = RESET;
+  /* Check the parameters */
+  assert_param(IS_FLASH_GET_FLAG(FLASH_FLAG));
+ 
+  if((FLASH->SR & FLASH_FLAG) != (uint32_t)RESET)
+  {
+    bitstatus = SET;
+  }
+  else
+  {
+    bitstatus = RESET;
+  }
+  /* Return the new state of FLASH_FLAG (SET or RESET) */
+  return bitstatus; 
+}
+ 
+/**
+  * @brief  Clears the FLASH's pending flags.
+  * @param  FLASH_FLAG: specifies the FLASH flags to clear.
+  *          This parameter can be any combination of the following values:
+  *            @arg FLASH_FLAG_EOP: FLASH End of Operation flag 
+  *            @arg FLASH_FLAG_OPERR: FLASH operation Error flag 
+  *            @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag 
+  *            @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag 
+  *            @arg FLASH_FLAG_PGPERR: FLASH Programming Parallelism error flag
+  *            @arg FLASH_FLAG_PGSERR: FLASH Programming Sequence error flag
+  *            @arg FLASH_FLAG_RDERR: FLASH Read Protection error flag (STM32F42xx/43xxx and STM32F401xx/411xE devices)   
+  * @retval None
+  */
+void FLASH_ClearFlag(uint32_t FLASH_FLAG)
+{
+  /* Check the parameters */
+  assert_param(IS_FLASH_CLEAR_FLAG(FLASH_FLAG));
+  
+  /* Clear the flags */
+  FLASH->SR = FLASH_FLAG;
+}
+ 
+/**
+  * @brief  Returns the FLASH Status.
+  * @param  None
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_RD2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_GetStatus(void)
+{
+  FLASH_Status flashstatus = FLASH_COMPLETE2;
+  
+  if((FLASH->SR & FLASH_FLAG_BSY) == FLASH_FLAG_BSY) 
+  {
+    flashstatus = FLASH_BUSY2;
+  }
+  else 
+  {  
+    if((FLASH->SR & FLASH_FLAG_WRPERR) != (uint32_t)0x00)
+    { 
+      flashstatus = FLASH_ERROR_WRP2;
+    }
+    else
+    {
+      if((FLASH->SR & FLASH_FLAG_RDERR) != (uint32_t)0x00)
+      { 
+        flashstatus = FLASH_ERROR_RD2;
+      } 
+      else 
+      {
+        if((FLASH->SR & (uint32_t)0xE0) != (uint32_t)0x00)
+        {
+          flashstatus = FLASH_ERROR_PROGRAM2; 
+        }
+        else
+        {
+          if((FLASH->SR & FLASH_FLAG_OPERR) != (uint32_t)0x00)
+          {
+            flashstatus = FLASH_ERROR_OPERATION2;
+          }
+          else
+          {
+            flashstatus = FLASH_COMPLETE2;
+          }
+        }
+      }
+    }
+  }
+  /* Return the FLASH Status */
+  return flashstatus;
+}
+ 
+/**
+  * @brief  Waits for a FLASH operation to complete.
+  * @param  None
+  * @retval FLASH Status: The returned value can be: FLASH_BUSY2, FLASH_ERROR_PROGRAM2,
+  *                       FLASH_ERROR_WRP2, FLASH_ERROR_OPERATION2 or FLASH_COMPLETE2.
+  */
+FLASH_Status FLASH_WaitForLastOperation2(void)
+{ 
+  __IO FLASH_Status status = FLASH_COMPLETE2;
+   
+  /* Check for the FLASH Status */
+  status = FLASH_GetStatus();
+ 
+  /* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
+     Even if the FLASH operation fails, the BUSY flag will be reset and an error
+     flag will be set */
+  while(status == FLASH_BUSY2)
+  {
+    status = FLASH_GetStatus();
+  }
+  /* Return the operation status */
+  return status;
+}
+ 
+/**
+  * @}
+  */ 
+ 
+/**
+  * @}
+  */ 
+ 
+/**
+  * @}
+  */ 
+ 
+/**
+  * @}
+  */
+ 
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PreferenceWriter/stm32f4xx_flash.h	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,425 @@
+/**
+  ******************************************************************************
+  * @file    stm32f4xx_flash.h
+  * @author  MCD Application Team
+  * @version V1.7.1
+  * @date    20-May-2016
+  * @brief   This file contains all the functions prototypes for the FLASH 
+  *          firmware library.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Unless required by applicable law or agreed to in writing, software 
+  * distributed under the License is distributed on an "AS IS" BASIS, 
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+  ******************************************************************************
+  */
+ 
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32F4xx_FLASH_H
+#define __STM32F4xx_FLASH_H
+ 
+#ifdef __cplusplus
+ extern "C" {
+#endif
+ 
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f4xx.h"
+ 
+/** @addtogroup STM32F4xx_StdPeriph_Driver
+  * @{
+  */
+ 
+/** @addtogroup FLASH
+  * @{
+  */ 
+ 
+/* Exported types ------------------------------------------------------------*/
+/** 
+  * @brief FLASH Status  
+  */ 
+typedef enum
+{ 
+  FLASH_BUSY2 = 1,
+  FLASH_ERROR_RD2,
+  FLASH_ERROR_PGS2,
+  FLASH_ERROR_PGP2,
+  FLASH_ERROR_PGA2,
+  FLASH_ERROR_WRP2,
+  FLASH_ERROR_PROGRAM2,
+  FLASH_ERROR_OPERATION2,
+  FLASH_COMPLETE2
+}FLASH_Status;
+ 
+/* Exported constants --------------------------------------------------------*/
+ 
+/** @defgroup FLASH_Exported_Constants
+  * @{
+  */  
+ 
+/** @defgroup Flash_Latency 
+  * @{
+  */ 
+#define FLASH_Latency_0                ((uint8_t)0x0000)  /*!< FLASH Zero Latency cycle      */
+#define FLASH_Latency_1                ((uint8_t)0x0001)  /*!< FLASH One Latency cycle       */
+#define FLASH_Latency_2                ((uint8_t)0x0002)  /*!< FLASH Two Latency cycles      */
+#define FLASH_Latency_3                ((uint8_t)0x0003)  /*!< FLASH Three Latency cycles    */
+#define FLASH_Latency_4                ((uint8_t)0x0004)  /*!< FLASH Four Latency cycles     */
+#define FLASH_Latency_5                ((uint8_t)0x0005)  /*!< FLASH Five Latency cycles     */
+#define FLASH_Latency_6                ((uint8_t)0x0006)  /*!< FLASH Six Latency cycles      */
+#define FLASH_Latency_7                ((uint8_t)0x0007)  /*!< FLASH Seven Latency cycles    */
+#define FLASH_Latency_8                ((uint8_t)0x0008)  /*!< FLASH Eight Latency cycles    */
+#define FLASH_Latency_9                ((uint8_t)0x0009)  /*!< FLASH Nine Latency cycles     */
+#define FLASH_Latency_10               ((uint8_t)0x000A)  /*!< FLASH Ten Latency cycles      */
+#define FLASH_Latency_11               ((uint8_t)0x000B)  /*!< FLASH Eleven Latency cycles   */
+#define FLASH_Latency_12               ((uint8_t)0x000C)  /*!< FLASH Twelve Latency cycles   */
+#define FLASH_Latency_13               ((uint8_t)0x000D)  /*!< FLASH Thirteen Latency cycles */
+#define FLASH_Latency_14               ((uint8_t)0x000E)  /*!< FLASH Fourteen Latency cycles */
+#define FLASH_Latency_15               ((uint8_t)0x000F)  /*!< FLASH Fifteen Latency cycles  */
+ 
+/**
+  * @}
+  */ 
+ 
+/** @defgroup FLASH_Voltage_Range 
+  * @{
+  */ 
+#define VoltageRange_1        ((uint8_t)0x00)  /*!< Device operating range: 1.8V to 2.1V */
+#define VoltageRange_2        ((uint8_t)0x01)  /*!<Device operating range: 2.1V to 2.7V */
+#define VoltageRange_3        ((uint8_t)0x02)  /*!<Device operating range: 2.7V to 3.6V */
+#define VoltageRange_4        ((uint8_t)0x03)  /*!<Device operating range: 2.7V to 3.6V + External Vpp */
+ 
+/*
+#define IS_VOLTAGERANGE(RANGE)(((RANGE) == VoltageRange_1) || \
+                               ((RANGE) == VoltageRange_2) || \
+                               ((RANGE) == VoltageRange_3) || \
+                               ((RANGE) == VoltageRange_4))
+*/
+
+/**
+  * @}
+  */ 
+ 
+/** @defgroup FLASH_Sectors
+  * @{
+  */
+#define FLASH_Sector_0     ((uint16_t)0x0000) /*!< Sector Number 0   */
+#define FLASH_Sector_1     ((uint16_t)0x0008) /*!< Sector Number 1   */
+#define FLASH_Sector_2     ((uint16_t)0x0010) /*!< Sector Number 2   */
+#define FLASH_Sector_3     ((uint16_t)0x0018) /*!< Sector Number 3   */
+#define FLASH_Sector_4     ((uint16_t)0x0020) /*!< Sector Number 4   */
+#define FLASH_Sector_5     ((uint16_t)0x0028) /*!< Sector Number 5   */
+#define FLASH_Sector_6     ((uint16_t)0x0030) /*!< Sector Number 6   */
+#define FLASH_Sector_7     ((uint16_t)0x0038) /*!< Sector Number 7   */
+#define FLASH_Sector_8     ((uint16_t)0x0040) /*!< Sector Number 8   */
+#define FLASH_Sector_9     ((uint16_t)0x0048) /*!< Sector Number 9   */
+#define FLASH_Sector_10    ((uint16_t)0x0050) /*!< Sector Number 10  */
+#define FLASH_Sector_11    ((uint16_t)0x0058) /*!< Sector Number 11  */
+#define FLASH_Sector_12    ((uint16_t)0x0080) /*!< Sector Number 12  */
+#define FLASH_Sector_13    ((uint16_t)0x0088) /*!< Sector Number 13  */
+#define FLASH_Sector_14    ((uint16_t)0x0090) /*!< Sector Number 14  */
+#define FLASH_Sector_15    ((uint16_t)0x0098) /*!< Sector Number 15  */
+#define FLASH_Sector_16    ((uint16_t)0x00A0) /*!< Sector Number 16  */
+#define FLASH_Sector_17    ((uint16_t)0x00A8) /*!< Sector Number 17  */
+#define FLASH_Sector_18    ((uint16_t)0x00B0) /*!< Sector Number 18  */
+#define FLASH_Sector_19    ((uint16_t)0x00B8) /*!< Sector Number 19  */
+#define FLASH_Sector_20    ((uint16_t)0x00C0) /*!< Sector Number 20  */
+#define FLASH_Sector_21    ((uint16_t)0x00C8) /*!< Sector Number 21  */
+#define FLASH_Sector_22    ((uint16_t)0x00D0) /*!< Sector Number 22  */
+#define FLASH_Sector_23    ((uint16_t)0x00D8) /*!< Sector Number 23  */
+ 
+#if defined (STM32F427_437xx) || defined (STM32F429_439xx) || defined (STM32F469_479xx)
+#define IS_FLASH_ADDRESS(ADDRESS) ((((ADDRESS) >= 0x08000000) && ((ADDRESS) <= 0x081FFFFF)) ||\
+                                   (((ADDRESS) >= 0x1FFF7800) && ((ADDRESS) <= 0x1FFF7A0F)))  
+#endif /* STM32F427_437xx || STM32F429_439xx || STM32F469_479xx */
+ 
+#if defined (STM32F40_41xxx) || defined(STM32F412xG)
+#define IS_FLASH_ADDRESS(ADDRESS) ((((ADDRESS) >= 0x08000000) && ((ADDRESS) <= 0x080FFFFF)) ||\
+                                   (((ADDRESS) >= 0x1FFF7800) && ((ADDRESS) <= 0x1FFF7A0F))) 
+#endif /* STM32F40_41xxx || STM32F412xG */
+ 
+#if defined (STM32F401xx)
+#define IS_FLASH_ADDRESS(ADDRESS) ((((ADDRESS) >= 0x08000000) && ((ADDRESS) <= 0x0803FFFF)) ||\
+                                   (((ADDRESS) >= 0x1FFF7800) && ((ADDRESS) <= 0x1FFF7A0F)))
+#endif /* STM32F401xx */
+ 
+#if defined (STM32F411xE) || defined (STM32F446xx)
+//#define IS_FLASH_ADDRESS(ADDRESS) ((((ADDRESS) >= 0x08000000) && ((ADDRESS) <= 0x0807FFFF)) ||\
+//                                   (((ADDRESS) >= 0x1FFF7800) && ((ADDRESS) <= 0x1FFF7A0F)))
+#endif /* STM32F411xE || STM32F446xx */
+ 
+#if defined (STM32F410xx)
+#define IS_FLASH_ADDRESS(ADDRESS) ((((ADDRESS) >= 0x08000000) && ((ADDRESS) <= 0x0801FFFF)) ||\
+                                   (((ADDRESS) >= 0x1FFF7800) && ((ADDRESS) <= 0x1FFF7A0F)))
+#endif /* STM32F410xx */
+ 
+/**
+  * @}
+  */ 
+ 
+/** @defgroup Option_Bytes_Write_Protection 
+  * @{
+  */ 
+#define OB_WRP_Sector_0       ((uint32_t)0x00000001) /*!< Write protection of Sector0     */
+#define OB_WRP_Sector_1       ((uint32_t)0x00000002) /*!< Write protection of Sector1     */
+#define OB_WRP_Sector_2       ((uint32_t)0x00000004) /*!< Write protection of Sector2     */
+#define OB_WRP_Sector_3       ((uint32_t)0x00000008) /*!< Write protection of Sector3     */
+#define OB_WRP_Sector_4       ((uint32_t)0x00000010) /*!< Write protection of Sector4     */
+#define OB_WRP_Sector_5       ((uint32_t)0x00000020) /*!< Write protection of Sector5     */
+#define OB_WRP_Sector_6       ((uint32_t)0x00000040) /*!< Write protection of Sector6     */
+#define OB_WRP_Sector_7       ((uint32_t)0x00000080) /*!< Write protection of Sector7     */
+#define OB_WRP_Sector_8       ((uint32_t)0x00000100) /*!< Write protection of Sector8     */
+#define OB_WRP_Sector_9       ((uint32_t)0x00000200) /*!< Write protection of Sector9     */
+#define OB_WRP_Sector_10      ((uint32_t)0x00000400) /*!< Write protection of Sector10    */
+#define OB_WRP_Sector_11      ((uint32_t)0x00000800) /*!< Write protection of Sector11    */
+#define OB_WRP_Sector_12      ((uint32_t)0x00000001) /*!< Write protection of Sector12    */
+#define OB_WRP_Sector_13      ((uint32_t)0x00000002) /*!< Write protection of Sector13    */
+#define OB_WRP_Sector_14      ((uint32_t)0x00000004) /*!< Write protection of Sector14    */
+#define OB_WRP_Sector_15      ((uint32_t)0x00000008) /*!< Write protection of Sector15    */
+#define OB_WRP_Sector_16      ((uint32_t)0x00000010) /*!< Write protection of Sector16    */
+#define OB_WRP_Sector_17      ((uint32_t)0x00000020) /*!< Write protection of Sector17    */
+#define OB_WRP_Sector_18      ((uint32_t)0x00000040) /*!< Write protection of Sector18    */
+#define OB_WRP_Sector_19      ((uint32_t)0x00000080) /*!< Write protection of Sector19    */
+#define OB_WRP_Sector_20      ((uint32_t)0x00000100) /*!< Write protection of Sector20    */
+#define OB_WRP_Sector_21      ((uint32_t)0x00000200) /*!< Write protection of Sector21    */
+#define OB_WRP_Sector_22      ((uint32_t)0x00000400) /*!< Write protection of Sector22    */
+#define OB_WRP_Sector_23      ((uint32_t)0x00000800) /*!< Write protection of Sector23    */
+#define OB_WRP_Sector_All     ((uint32_t)0x00000FFF) /*!< Write protection of all Sectors */
+ 
+#define IS_OB_WRP(SECTOR)((((SECTOR) & (uint32_t)0xFFFFF000) == 0x00000000) && ((SECTOR) != 0x00000000))
+/**
+  * @}
+  */
+ 
+/** @defgroup  Selection_Protection_Mode
+  * @{
+  */
+#define OB_PcROP_Disable   ((uint8_t)0x00) /*!< Disabled PcROP, nWPRi bits used for Write Protection on sector i */
+#define OB_PcROP_Enable    ((uint8_t)0x80) /*!< Enable PcROP, nWPRi bits used for PCRoP Protection on sector i   */
+
+/**
+  * @}
+  */
+ 
+/** @defgroup Option_Bytes_PC_ReadWrite_Protection 
+  * @{
+  */ 
+#define OB_PCROP_Sector_0        ((uint32_t)0x00000001) /*!< PC Read/Write protection of Sector0      */
+#define OB_PCROP_Sector_1        ((uint32_t)0x00000002) /*!< PC Read/Write protection of Sector1      */
+#define OB_PCROP_Sector_2        ((uint32_t)0x00000004) /*!< PC Read/Write protection of Sector2      */
+#define OB_PCROP_Sector_3        ((uint32_t)0x00000008) /*!< PC Read/Write protection of Sector3      */
+#define OB_PCROP_Sector_4        ((uint32_t)0x00000010) /*!< PC Read/Write protection of Sector4      */
+#define OB_PCROP_Sector_5        ((uint32_t)0x00000020) /*!< PC Read/Write protection of Sector5      */
+#define OB_PCROP_Sector_6        ((uint32_t)0x00000040) /*!< PC Read/Write protection of Sector6      */
+#define OB_PCROP_Sector_7        ((uint32_t)0x00000080) /*!< PC Read/Write protection of Sector7      */
+#define OB_PCROP_Sector_8        ((uint32_t)0x00000100) /*!< PC Read/Write protection of Sector8      */
+#define OB_PCROP_Sector_9        ((uint32_t)0x00000200) /*!< PC Read/Write protection of Sector9      */
+#define OB_PCROP_Sector_10       ((uint32_t)0x00000400) /*!< PC Read/Write protection of Sector10     */
+#define OB_PCROP_Sector_11       ((uint32_t)0x00000800) /*!< PC Read/Write protection of Sector11     */
+#define OB_PCROP_Sector_12       ((uint32_t)0x00000001) /*!< PC Read/Write protection of Sector12     */
+#define OB_PCROP_Sector_13       ((uint32_t)0x00000002) /*!< PC Read/Write protection of Sector13     */
+#define OB_PCROP_Sector_14       ((uint32_t)0x00000004) /*!< PC Read/Write protection of Sector14     */
+#define OB_PCROP_Sector_15       ((uint32_t)0x00000008) /*!< PC Read/Write protection of Sector15     */
+#define OB_PCROP_Sector_16       ((uint32_t)0x00000010) /*!< PC Read/Write protection of Sector16     */
+#define OB_PCROP_Sector_17       ((uint32_t)0x00000020) /*!< PC Read/Write protection of Sector17     */
+#define OB_PCROP_Sector_18       ((uint32_t)0x00000040) /*!< PC Read/Write protection of Sector18     */
+#define OB_PCROP_Sector_19       ((uint32_t)0x00000080) /*!< PC Read/Write protection of Sector19     */
+#define OB_PCROP_Sector_20       ((uint32_t)0x00000100) /*!< PC Read/Write protection of Sector20     */
+#define OB_PCROP_Sector_21       ((uint32_t)0x00000200) /*!< PC Read/Write protection of Sector21     */
+#define OB_PCROP_Sector_22       ((uint32_t)0x00000400) /*!< PC Read/Write protection of Sector22     */
+#define OB_PCROP_Sector_23       ((uint32_t)0x00000800) /*!< PC Read/Write protection of Sector23     */
+#define OB_PCROP_Sector_All      ((uint32_t)0x00000FFF) /*!< PC Read/Write protection of all Sectors  */
+ 
+/**
+  * @}
+  */
+ 
+/** @defgroup FLASH_Option_Bytes_Read_Protection 
+  * @{
+  */
+#define OB_RDP_Level_0   ((uint8_t)0xAA)
+#define OB_RDP_Level_1   ((uint8_t)0x55)
+/*#define OB_RDP_Level_2   ((uint8_t)0xCC)*/ /*!< Warning: When enabling read protection level 2 
+                                                  it's no more possible to go back to level 1 or 0 */
+#define IS_OB_RDP(LEVEL) (((LEVEL) == OB_RDP_Level_0)||\
+                          ((LEVEL) == OB_RDP_Level_1))/*||\
+                          ((LEVEL) == OB_RDP_Level_2))*/
+/**
+  * @}
+  */ 
+ 
+/** @defgroup FLASH_Option_Bytes_IWatchdog 
+  * @{
+  */ 
+
+#define IS_OB_IWDG_SOURCE(SOURCE) (((SOURCE) == OB_IWDG_SW) || ((SOURCE) == OB_IWDG_HW))
+/**
+  * @}
+  */ 
+ 
+/** @defgroup FLASH_Option_Bytes_nRST_STOP 
+  * @{
+  */ 
+#define OB_STOP_NoRST                  ((uint8_t)0x40) /*!< No reset generated when entering in STOP */
+
+/**
+  * @}
+  */ 
+ 
+ 
+/** @defgroup FLASH_Option_Bytes_nRST_STDBY 
+  * @{
+  */ 
+#define OB_STDBY_NoRST                 ((uint8_t)0x80) /*!< No reset generated when entering in STANDBY */
+//#define OB_STDBY_RST                   ((uint8_t)0x00) /*!< Reset generated when entering in STANDBY */
+//#define IS_OB_STDBY_SOURCE(SOURCE) (((SOURCE) == OB_STDBY_NoRST) || ((SOURCE) == OB_STDBY_RST))
+/**
+  * @}
+  */
+  
+/** @defgroup FLASH_BOR_Reset_Level 
+  * @{
+  */  
+
+#define IS_OB_BOR(LEVEL) (((LEVEL) == OB_BOR_LEVEL1) || ((LEVEL) == OB_BOR_LEVEL2) ||\
+                          ((LEVEL) == OB_BOR_LEVEL3) || ((LEVEL) == OB_BOR_OFF))
+/**
+  * @}
+  */
+  
+/** @defgroup FLASH_Dual_Boot
+  * @{
+  */
+#define OB_Dual_BootEnabled   ((uint8_t)0x10) /*!< Dual Bank Boot Enable                             */
+#define OB_Dual_BootDisabled  ((uint8_t)0x00) /*!< Dual Bank Boot Disable, always boot on User Flash */
+#define IS_OB_BOOT(BOOT) (((BOOT) == OB_Dual_BootEnabled) || ((BOOT) == OB_Dual_BootDisabled))
+/**
+  * @}
+  */
+ 
+/** @defgroup FLASH_Interrupts 
+  * @{
+  */ 
+
+#define IS_FLASH_IT(IT) ((((IT) & (uint32_t)0xFCFFFFFF) == 0x00000000) && ((IT) != 0x00000000))
+/**
+  * @}
+  */ 
+ 
+/** @defgroup FLASH_Flags 
+  * @{
+  */ 
+
+#define IS_FLASH_CLEAR_FLAG(FLAG) ((((FLAG) & (uint32_t)0xFFFFFE0C) == 0x00000000) && ((FLAG) != 0x00000000))
+#define IS_FLASH_GET_FLAG(FLAG)  (((FLAG) == FLASH_FLAG_EOP)    || ((FLAG) == FLASH_FLAG_OPERR)  || \
+                                  ((FLAG) == FLASH_FLAG_WRPERR) || ((FLAG) == FLASH_FLAG_PGAERR) || \
+                                  ((FLAG) == FLASH_FLAG_PGPERR) || ((FLAG) == FLASH_FLAG_PGSERR) || \
+                                  ((FLAG) == FLASH_FLAG_BSY)    || ((FLAG) == FLASH_FLAG_RDERR))
+ 
+/** 
+  * @brief   ACR register byte 0 (Bits[7:0]) base address  
+  */ 
+//#define ACR_BYTE0_ADDRESS           ((uint32_t)0x40023C00) 
+/** 
+  * @brief   OPTCR register byte 0 (Bits[7:0]) base address  
+  */ 
+//#define OPTCR_BYTE0_ADDRESS         ((uint32_t)0x40023C14)
+/** 
+  * @brief   OPTCR register byte 1 (Bits[15:8]) base address  
+  */ 
+//#define OPTCR_BYTE1_ADDRESS         ((uint32_t)0x40023C15)
+/** 
+  * @brief   OPTCR register byte 2 (Bits[23:16]) base address  
+  */ 
+//#define OPTCR_BYTE2_ADDRESS         ((uint32_t)0x40023C16)
+/** 
+  * @brief   OPTCR register byte 3 (Bits[31:24]) base address  
+  */ 
+//#define OPTCR_BYTE3_ADDRESS         ((uint32_t)0x40023C17)
+ 
+/** 
+  * @brief   OPTCR1 register byte 0 (Bits[7:0]) base address  
+  */ 
+#define OPTCR1_BYTE2_ADDRESS         ((uint32_t)0x40023C1A)
+ 
+/**
+  * @}
+  */ 
+ 
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/ 
+ 
+/* FLASH Interface configuration functions ************************************/
+void FLASH_SetLatency(uint32_t FLASH_Latency);
+void FLASH_PrefetchBufferCmd(FunctionalState NewState);
+void FLASH_InstructionCacheCmd(FunctionalState NewState);
+void FLASH_DataCacheCmd(FunctionalState NewState);
+void FLASH_InstructionCacheReset(void);
+void FLASH_DataCacheReset(void);
+ 
+/* FLASH Memory Programming functions *****************************************/   
+void         FLASH_Unlock(void);
+void         FLASH_Lock(void);
+FLASH_Status FLASH_EraseSector(uint32_t FLASH_Sector, uint8_t VoltageRange);
+FLASH_Status FLASH_EraseAllSectors(uint8_t VoltageRange);
+FLASH_Status FLASH_EraseAllBank1Sectors(uint8_t VoltageRange);
+FLASH_Status FLASH_EraseAllBank2Sectors(uint8_t VoltageRange);
+FLASH_Status FLASH_ProgramDoubleWord(uint32_t Address, uint64_t Data);
+FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data);
+FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data);
+FLASH_Status FLASH_ProgramByte(uint32_t Address, uint8_t Data);
+ 
+/* Option Bytes Programming functions *****************************************/ 
+void         FLASH_OB_Unlock(void);
+void         FLASH_OB_Lock(void);
+void         FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState);
+void         FLASH_OB_WRP1Config(uint32_t OB_WRP, FunctionalState NewState);
+void         FLASH_OB_PCROPSelectionConfig(uint8_t OB_PcROP);
+void         FLASH_OB_PCROPConfig(uint32_t OB_PCROP, FunctionalState NewState);
+void         FLASH_OB_PCROP1Config(uint32_t OB_PCROP, FunctionalState NewState);
+void         FLASH_OB_RDPConfig(uint8_t OB_RDP);
+void         FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY);
+void         FLASH_OB_BORConfig(uint8_t OB_BOR);
+void         FLASH_OB_BootConfig(uint8_t OB_BOOT);
+FLASH_Status FLASH_OB_Launch(void);
+uint8_t      FLASH_OB_GetUser(void);
+uint16_t     FLASH_OB_GetWRP(void);
+uint16_t     FLASH_OB_GetWRP1(void);
+uint16_t     FLASH_OB_GetPCROP(void);
+uint16_t     FLASH_OB_GetPCROP1(void);
+FlagStatus   FLASH_OB_GetRDP(void);
+uint8_t      FLASH_OB_GetBOR(void);
+ 
+/* Interrupts and flags management functions **********************************/
+void         FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState);
+FlagStatus   FLASH_GetFlagStatus(uint32_t FLASH_FLAG);
+void         FLASH_ClearFlag(uint32_t FLASH_FLAG);
+FLASH_Status FLASH_GetStatus(void);
+FLASH_Status FLASH_WaitForLastOperation2(void);
+ 
+#ifdef __cplusplus
+}
+#endif
+ 
+#endif /* __STM32F4xx_FLASH_H */
+ 
+/**
+  * @}
+  */ 
+ 
+/**
+  * @}
+  */ 
+ 
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/globals.h	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,47 @@
+#ifndef __GLOBALS_H
+#define __GLOBALS_H
+
+#include "FastPWM.h"
+#include "PreferenceWriter.h"
+
+extern FastPWM *out1, *out2, *out3;
+extern int adval1, adval2;
+extern PreferenceWriter *pref;
+extern float current, throttle, vout, user_cmd;
+
+extern int __int_reg[];
+extern float __float_reg[];
+
+#define I_LIMIT __float_reg[0]
+#define KP __float_reg[1]
+#define KI __float_reg[2]
+#define F_SW __float_reg[3]
+#define THROTTLE_DEADBAND __float_reg[4]
+#define ANALOG_THROTTLE_LOW __float_reg[5]
+#define ANALOG_THROTTLE_HI __float_reg[6]
+
+#define PREFS_VALID __int_reg[0]
+#define BREMS_src __int_reg[1]
+#define BREMS_op __int_reg[2]
+
+#define NUM_OPS 4
+enum {
+    OP_TORQUE,
+    OP_DRIVING,
+    OP_SPEED,
+    OP_POSITION,
+};
+
+#define NUM_SRCS 6
+enum {
+    CMD_SRC_RC,
+    CMD_SRC_ANALOG,
+    CMD_SRC_TERMINAL,
+    CMD_SRC_SERIAL,
+    CMD_SRC_CAN,
+    CMD_SRC_INTERNAL
+};
+
+#define set_dtc(a, x) *a = (x)
+
+#endif
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,187 @@
+#include "mbed.h"
+#include "globals.h"
+#include "CommandProcessor.h"
+#include "PreferenceWriter.h"
+#include "Filter.h"
+#include "FastPWM.h"
+
+#define AVDD 3.3f
+#define I_PN 300.0f
+#define G_TH (.625f / I_PN)
+#define R_UP 12.f
+#define R_DN 12.f
+#define V_REF 2.5f
+
+Serial pc(USBTX, USBRX);
+FastPWM *out1, *out2, *out3;
+int adval1, adval2;
+DigitalOut test(PC_6);
+PreferenceWriter *pref;
+float user_cmd;
+
+char linebuf[128];
+int index = 0;
+
+float current, throttle, vout;
+float integral, err;
+
+void rxCallback() {
+    while (pc.readable()) {
+        char c = pc.getc();
+        if (c != 127 && c != 8 && c != '\r' && c != '\t') {
+            linebuf[index] = c;
+            if (index < 127) index++;
+            pc.putc(c);
+        } else if (c == 127 || c == 8) {
+            if (index > 0) {
+                index--;
+                //BS (8) should delete previous char
+                pc.putc(127);
+            }
+        } else if (c == '\r') {
+            linebuf[index] = 0;
+            pc.putc(c);
+            processCmd(&pc, linebuf);
+            index = 0;
+            pc.putc('>');
+        }
+    }
+}
+
+inline float to_amps(float adval) {
+    float adv = adval * AVDD;
+    float adv_unscaled = adv * (R_UP + R_DN) / R_DN;
+    float adv_unoffs = adv_unscaled - V_REF;
+    return adv_unoffs / G_TH;
+}
+
+extern "C" void TIM1_UP_TIM10_IRQHandler(void) {    
+    if (TIM1->SR & TIM_SR_UIF ) {
+        ADC1->CR2  |= 0x40000000; 
+        volatile int delay;
+        for (delay = 0; delay < 35; delay++);
+        
+        adval1 = ADC1->DR;
+        adval2 = ADC2->DR;
+        
+        current = to_amps((float) adval1 / 4095.0f);
+
+        switch (BREMS_src) {
+        case CMD_SRC_TERMINAL:
+            throttle = user_cmd;
+            break;
+        case CMD_SRC_ANALOG:
+            throttle = adval2 / 4095.0f;
+            break;
+        default:
+            break;
+        }
+        
+        if (throttle < THROTTLE_DEADBAND) throttle = 0.0f;
+        
+        err = throttle * I_LIMIT - current;
+        integral += err * KI;
+        if (integral < 0.0f) integral = 0.0f;
+        if (integral > 1.0f) integral = 1.0f;
+        
+        vout = KP * err + integral;
+        if (vout < 0.0f) vout = 0.0f;
+        if (vout > 1.0f) vout = 1.0f;
+                
+        switch (BREMS_op) {
+        case OP_TORQUE:
+            set_dtc(out1, vout);
+            break;
+        case OP_SPEED:
+            set_dtc(out1, user_cmd);
+            break;
+        default:
+            break;
+        }     
+    }
+    TIM1->SR = 0x00;
+}
+
+void BREMSConfigRegisters() {
+    //Load preferences
+    cmd_clear(&pc);
+    pref = new PreferenceWriter(6);
+    cmd_reload(&pc, pref);
+    if (PREFS_VALID != 1) {
+        pc.printf("Stored preferences invalid, loading defaults\n");
+        KP = 1.0f;
+        KI = 1.0f;
+        I_LIMIT = 400.0f;
+        BREMS_src = CMD_SRC_ANALOG;
+    }
+    
+    //safety first!
+    user_cmd = 0.0f;
+
+    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOAEN;
+    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOBEN;
+    RCC->AHB1ENR |= RCC_AHB1ENR_GPIOCEN;
+    
+    RCC->APB2ENR |= RCC_APB2ENR_TIM1EN; //enable TIM1 clock
+    
+    out1 = new FastPWM(PA_8);
+    out2 = new FastPWM(PA_9);
+    out3 = new FastPWM(PA_10);
+    
+    NVIC_EnableIRQ(TIM1_UP_TIM10_IRQn); //Enable TIM1 IRQ
+
+    TIM1->DIER |= TIM_DIER_UIE; //enable update interrupt
+    TIM1->CR1 = 0x40; //0x40 for CMS = 10, center aligned mode 1, 0x00 for edge aligned
+    TIM1->CR1 |= TIM_CR1_ARPE; //autoreload on, 
+    TIM1->RCR |= 0x01; //0x01 for center-aligned, 0x00 for edge aligned
+    TIM1->EGR |= TIM_EGR_UG;
+    
+    TIM1->PSC = 0x00; //no prescaler, timer counts up in sync with the peripheral clock
+    TIM1->ARR = (int) ((float) 9e7 / F_SW); //*2 for edge aligned
+    TIM1->CCER |= TIM_CCER_CC1P; //rising edge aligned, non-inverting
+    TIM1->CCER |= TIM_CCER_CC2P;
+    TIM1->CCER |= TIM_CCER_CC3P;
+    TIM1->CR1 |= TIM_CR1_CEN;
+    
+    //ADC Setup
+    RCC->APB2ENR |= RCC_APB2ENR_ADC1EN; // clock for ADC1
+    RCC->APB2ENR |= RCC_APB2ENR_ADC2EN; // clock for ADC2
+    
+    ADC->CCR = 0x00000006; //Regular simultaneous mode, 3 channels
+    
+    ADC1->CR2 |= ADC_CR2_ADON; //ADC1 on
+    ADC1->SQR3 = 0x0000004; //PA_4 as ADC1, sequence 0
+    
+    ADC2->CR2 |= ADC_CR2_ADON; //ADC2 ON
+    ADC2->SQR3 = 0x00000008; //PB_0 as ADC2, sequence 1
+    
+    //PA_4 as analog
+    GPIOA->MODER |= (1 << 8);
+    GPIOA->MODER |= (1 << 9);
+    
+    //PB_0 as analog
+    GPIOB->MODER |= (1 << 0);
+    GPIOB->MODER |= (1 << 1);
+    
+    //Outputs off
+    set_dtc(out1, 0.0f);
+    set_dtc(out2, 0.0f);
+    set_dtc(out3, 0.0f);
+    current = 0.0f;
+    throttle = 0.0f;
+    integral = 0.0f;
+    
+    //Wait for sensors to settle
+    wait(1.0);    
+}
+
+int main() {    
+    pc.baud(115200);
+    pc.attach(rxCallback);
+        
+    BREMSConfigRegisters();
+    pc.printf(">");
+        
+    for (;;) {
+    }
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Sun Feb 03 03:38:05 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/e95d10626187
\ No newline at end of file