mbed_nanosec_timer

Users » TimeString » Code » mbed_nanosec_timer

Bo-Jhang Ho / Mbed 2 deprecated mbed_nanosec_timer

Dependencies: MAG3110 MMA8451Q SLCD TSI mbed

Revision 0:ba78bf4f69dc, committed 2014-03-12

Comitter:: TimeString
Date:: Wed Mar 12 20:48:17 2014 +0000
Commit message:: to jaeyoung

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MAG3110.lib	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/SomeRandomBloke/code/MAG3110/#cf40601402b7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/MMA8451Q.lib	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/JoKer/code/MMA8451Q/#2d14600116fc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SLCD.lib	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/Sissors/code/SLCD/#6e3c11967108

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TPM_init.cpp	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,145 @@
+#include "TPM_init.h"
+ 
+void TPM0_init(unsigned int modulo_val, unsigned int prescale_val){
+    volatile unsigned int *ptrMyReg;
+    unsigned int prev;
+    
+    //ptrMyReg = (volatile unsigned int *) MCG_C1_ADDR;
+    //pc.printf("MCG_C1 = 0x%x ", *ptrMyReg);
+    
+    ptrMyReg = (volatile unsigned int *) SIM_SOPT2_ADDR;
+    prev = *ptrMyReg;
+ 
+    SIM->SOPT2 |= SIM_SOPT2_PLLFLLSEL_MASK;
+    SIM->SOPT2 &= ~(SIM_SOPT2_TPMSRC_MASK);
+    SIM->SOPT2 |= SIM_SOPT2_TPMSRC(1);
+    
+    /*
+    //pc.printf("Previous value of SIM_SOPT2 = 0x%x ", *ptrMyReg);
+    //prev = prev & 0xFDFEFFFF;  //16:PLLFLLSEL, 0:MCFGFLLCLK, 1:MCGPLLCLK/2  
+    prev = prev & 0xFDFFFFFF;  //16:PLLFLLSEL, 0:MCFGFLLCLK, 1:MCGPLLCLK/2  
+    //pc.printf("prev after AND MASK = %x", prev);
+    prev = prev | 0x01000000;
+    //pc.printf("prev after AND MASK = %x", prev);
+    *ptrMyReg = prev;
+    //*ptrMyReg = prev | 0x01000000;  //25-24: TPMSRC, 01:MCGFLLCLK or MCFGPLLCLK/2
+    //*ptrMyReg = 0x05010000;
+    
+    //pc.printf("SIM_SOPT2 = 0x%x\n", *ptrMyReg);
+    */
+    
+    SIM->SCGC6 |= SIM_SCGC6_TPM0_MASK;
+    
+    /*
+    ptrMyReg = (volatile unsigned int *) SIM_SCGC6_ADDR; //bit [26-24]
+    prev = *ptrMyReg;
+    prev = prev | 0x07000000;
+    *ptrMyReg = prev;
+    //pc.printf("New value of SIM_SCGC6 = 0x%x ", *ptrMyReg); 
+    */
+    
+    //Set all bits to zero
+    TPM0->SC = 0x0;
+    
+    /*
+    ptrMyReg = (volatile unsigned int *) TPM0_SC_ADDR; //all bits set to 0
+    *ptrMyReg = 0x0;
+    //pc.printf("TPM0_SC = 0x%x\n", *ptrMyReg);
+    */
+    
+    //No channels for now
+    /*
+    ptrMyReg = (volatile unsigned int *) TPM0_C0SC_ADDR; 
+    prev = *ptrMyReg;
+    prev = prev | 0x00000040;
+    *ptrMyReg = prev;
+    //pc.printf("TPM0_C0SC = 0x%x\n", *ptrMyReg);
+    */
+    
+    //Reset COUNT value to zero
+    TPM0->CNT = 0x0;
+    /*
+    ptrMyReg = (volatile unsigned int *) TPM0_CNT_ADDR; //all bits set to 0
+    *ptrMyReg = 0x0;
+    //pc.printf("TPM0_CNT = 0x%x\n", *ptrMyReg);
+    */
+    
+    //Set modulo value
+    TPM0->MOD = modulo_val;
+    /*
+    ptrMyReg = (volatile unsigned int *) TPM0_MOD_ADDR; 
+    *ptrMyReg = modulo_val;
+    //*ptrMyReg = 0xFFFF;
+    //pc.printf("TPM0_MOD = 0x%x\n", *ptrMyReg);
+    */
+    
+    //Set prescale value
+    TPM0->SC |= prescale_val;
+    
+    //Enable overflow interrupt
+    TPM0->SC |= TPM_SC_TOIE_MASK;
+    
+    /*
+    ptrMyReg = (volatile unsigned int *) TPM0_SC_ADDR; 
+    *ptrMyReg = 0x00000040; //bit [6]:1, Enable Overflow Interrupts
+    //pc.printf("TPM0_SC = 0x%x\n", *ptrMyReg);
+    */
+    
+    
+    
+    
+    //Enable reset after overflow [27:24} Trigger, 1000: TPM0 overflow, [18]:counter reload on trigger
+/*    ptrMyReg = (volatile unsigned int *) TPM0_CONF_ADDR;
+    //prev = *ptrMyReg;
+    //prev = prev | 0x08000000;
+    //pc.printf("TPM0_CONF = 0x%x\n", *ptrMyReg);
+    *ptrMyReg = 0x08040000;
+*/    
+    
+}
+ 
+unsigned int TPM0_SC_read() {
+    unsigned int SC_value = TPM0->SC;
+    return SC_value;
+    /*
+    volatile unsigned int *ptrMyReg;
+    unsigned int value;
+    ptrMyReg = (volatile unsigned int *) TPM0_SC_ADDR; //all bits set to 0
+    value = *ptrMyReg;
+    return value;
+    */
+}
+unsigned int TPM0_CNT_read() {
+    unsigned int CNT_value = TPM0->CNT;
+    return CNT_value;
+    /*
+    volatile unsigned int *ptrMyReg;
+    unsigned int value;
+    ptrMyReg = (volatile unsigned int *) TPM0_CNT_ADDR; //all bits set to 0
+    value = *ptrMyReg;
+    return value;
+    */
+}
+ 
+void TPM0_clear_overflow() {
+    TPM0->SC |= TPM_SC_TOF_MASK;
+    /*
+    volatile unsigned int *ptrMyReg;
+    
+    ptrMyReg = (volatile unsigned int *) TPM0_SC_ADDR; //all bits set to 0
+    *ptrMyReg = 0x000000C8;     //bit[4:3]: 0x01, on every TPM counter clk
+    //*ptrMyReg = 0x00000088;     //Debugging handler. Try disabling overflow interrupts
+    //*ptrMyReg = 0x00000050;     //bit[4:3]: 0x10, on every rising edge of external ....
+    */
+}
+ 
+void TPM0_start() {   
+    
+    TPM0->SC |= TPM_SC_CMOD(1); //Count on every TPM counter clk
+    /*
+    volatile unsigned int *ptrMyReg;
+    
+    ptrMyReg = (volatile unsigned int *) TPM0_SC_ADDR; //all bits set to 0
+    *ptrMyReg = 0x00000048;     //bit[4:3]: 0x01, on every TPM counter clk
+    */
+}    
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TPM_init.h	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,24 @@
+#ifndef TPM_INIT_H
+#define TPM_INIT_H
+ 
+#include "mbed.h"
+ 
+#define SIM_SOPT2_ADDR 0x40048004
+#define SIM_SCGC6_ADDR 0x4004803C
+#define MCG_C1_ADDR     0x40064000
+#define TPM0_SC_ADDR    0x40038000
+#define TPM0_C0SC_ADDR  0x4003800C
+#define TPM0_CNT_ADDR  0x40038004
+#define TPM0_MOD_ADDR  0x40038008
+#define TPM0_CONF_ADDR  0x40038084
+ 
+void print_stuff(char* whatever);
+ 
+void TPM0_init(unsigned int modulo_val, unsigned int prescale_val);
+ 
+void TPM0_clear_overflow();
+unsigned int TPM0_CNT_read();
+unsigned int TPM0_SC_read();
+    
+void TPM0_start();
+#endif  
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TSI.lib	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/vsluiter/code/TSI/#4dc2f5a3a731

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,231 @@
+#include "mbed.h"
+#include "MMA8451Q.h"
+#include "MAG3110.h"
+#include "SLCD.h"
+#include "TSISensor.h"
+#include <math.h>
+#include "InterruptManager.h"
+#include "TPM_init.h"
+
+
+//#define IS_TRANSMITTER
+ 
+#ifndef IS_TRANSMITTER
+    #define IS_RECEIVER
+#endif
+
+ 
+#define BAUD_RATE   921600
+ 
+#define MMA8451_I2C_ADDRESS (0x1d << 1)
+#define MAG3110_I2C_ADDRESS (0x0e << 1)
+#define NVIC_ISER   0xE000E100
+#define NVIC_ISPR   0xE000E200
+ 
+#define SIM_SOPT2_ADDRESS 0x40048004
+#define SIM_SCGC6_ADDRESS 0x4004803C
+ 
+
+ 
+Serial pc(USBTX, USBRX);
+RawSerial mbed_rec(PTE0, PTE1);
+ 
+Timer timer;
+SLCD slcd;
+
+DigitalOut go(D1); 
+ 
+int offset_start_usec;
+int offset_end_usec;
+unsigned int flag;
+ 
+gpio_t gpio_1;
+gpio_t gpio_2;
+
+RawSerial uart_mbed(PTE0, PTE1);
+RawSerial uart_beagle(PTE22, PTE23);
+
+
+// signal
+const int sigSYN   = 44;
+
+// now mode
+int now_mode;
+const int modeGEN = 1;
+const int modeMON = 2;
+
+int now_interval;
+int now_output;
+
+
+
+void TPM0_handler() {
+    //pc.printf("handler called\n");
+    unsigned int overflow = TPM0_SC_read() & 0x000000C0; 
+    if(overflow == 0xC0) {
+        //pc.printf("SC_REG = 0x%x\n", TPM0_SC_read());
+        TPM0_clear_overflow();
+        //__ISB();
+        //__DSB();
+        //pc.printf("SC_REG = 0x%x\n", TPM0_SC_read());
+        
+        //set gpio pin
+        //int prev_val = gpio_read(&gpio_1);
+        //gpio_write(&gpio_1, ~prev_val);
+        //pc.printf("handler called\n");
+        flag++;   
+        //pc.printf("flag = %d\n", flag);
+        
+        //TPM0_clear_overflow();
+        NVIC_ClearPendingIRQ(TPM0_IRQn);
+        //__ISB();
+        //__DSB();
+        
+    }
+    //NVIC_ClearPendingIRQ(TPM0_IRQn);
+    
+}
+
+
+#ifdef IS_TRANSMITTER
+void transmitter_rec_byte_from_mbed() {
+}
+#endif
+    
+#ifdef IS_RECEIVER
+void receiver_rec_byte_from_mbed(){
+    int c = uart_mbed.getc();
+    //pc.printf("%d\n", c);
+    if(c == sigSYN) {
+        go = 1;
+        // TODO: enable timer, register timer_fire_signal(), prescale = 0, modulo = 48000
+    }
+}
+#endif
+
+#ifdef IS_TRANSMITTER
+void transmitter_timer_handler_reset_countdown() {
+    // TODO: disable timer
+    // TODO: reset timer
+    // TODO: enable timer, register timer_fire_signal(), prescale = 0, modulo = 48000
+    go = 1;
+}
+#endif
+
+void timer_fire_signal() {
+#ifdef IS_RECEIVER
+    // TODO: do time drift calibration, if have time. 2912ms drift 740 clk
+#endif
+    go = !go;
+}
+
+void rec_byte_from_beagle() {
+    //01: Generation mode start
+    //00: Generation mode stop
+    //1X: Monitoring mode
+    
+    int c1 = uart_mbed.getc();
+    int c2 = uart_mbed.getc();
+    int n = (c1 << 8) | c2;
+    if (n & 0x8000) { // Monitoring mode
+        if (now_mode != modeMON) {
+            // TODO: disable timer 
+            // TODO: sync again?
+            // TODO: initial monitor mode
+        }
+    }
+    else { // Generation mode
+        if (now_mode != modeGEN) {
+            // TODO: disable previous timer
+            // TODO: sync again?
+            // TODO: init monitor mode
+        }
+        
+        if (n & 0x4000) {  // start signal
+            now_interval = n & 0x3f;
+            now_output = 1;
+        }
+        else {  // stop signal
+            now_output = 0;
+        }
+    }
+}
+
+int main() {
+    pc.baud(921600);
+
+    
+    //TPM1->SC = 0;
+#ifdef IS_TRANSMITTER
+    slcd.printf("sen0");
+    pc.printf("I'm sender\n");
+#else  // IS_RECEIVER
+    slcd.printf("1rec");
+    pc.printf("I'm receiver\n");
+#endif
+
+    flag = 0;
+    unsigned int modulo_val = 48000;   //period = 1000usec
+    unsigned int prescale_val = 0;
+    pc.baud(BAUD_RATE);
+    
+    volatile unsigned int *ptrMyReg;
+ 
+ 
+ /* 
+    // ------lagacy code ----------------------------------
+    NVIC_SetVector(TPM0_IRQn, (uint32_t) TPM0_handler);
+    NVIC_SetPriority(TPM0_IRQn, 0);
+    //NVIC_EnableIRQ(TPM0_IRQn);
+ 
+    //ptrMyReg = (volatile unsigned int *) NVIC_ISER;
+    //*ptrMyReg = 0x14020000;
+//    pc.printf("NVIC_ISER = 0x%x ", *ptrMyReg);
+    
+//    ptrMyReg = (volatile unsigned int *) NVIC_ISPR;
+//    pc.printf("NVIC_ISPR = 0x%x ", *ptrMyReg);
+    
+    TPM0_init(modulo_val, prescale_val);
+    //ptrMyReg = (volatile unsigned int *) TPM0_MOD_ADDR;
+    //pc.printf("TPM0_MOD_ADDR = 0x%x ", *ptrMyReg);
+ 
+    NVIC_EnableIRQ(TPM0_IRQn);
+//    ptrMyReg = (volatile unsigned int *) TPM0_CONF_ADDR;
+//    pc.printf("TPM0_CONF = 0x%x\n", *ptrMyReg);
+    
+    gpio_init(&gpio_1, PTA1, PIN_OUTPUT);
+    gpio_write(&gpio_1, 0);    
+ 
+    gpio_init(&gpio_2, PTA1, PIN_OUTPUT);
+    gpio_write(&gpio_2, 0);
+    
+    gpio_write(&gpio_1, 1);
+    //gpio_write(&gpio_2, 1);
+    // ------lagacy code ----------------------------------
+*/
+
+    uart_mbed.baud(921600);
+
+
+    // register uart handler from BBB
+    uart_beagle.attach(rec_byte_from_beagle, Serial::RxIrq);
+
+#ifdef IS_TRANSMITTER
+    wait(1.0);  // wait enough time for receiver to attach handler
+#else //IS_RECEIVER 
+    uart_mbed.attach(receiver_rec_byte_from_mbed, Serial::RxIrq);
+#endif
+
+#ifdef IS_TRANSMITTER
+    // TODO: enable timer, attach handler "transmitter_timer_handler_reset_countdown", prescale = 0, modulo = ?
+#endif
+    
+    
+    
+    // a place should never reach
+    while (true) {
+        wait(999);
+    }
+    
+    
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Mar 12 20:48:17 2014 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/8e73be2a2ac1
\ No newline at end of file

Repository toolbox

Repository details

Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	12 Mar 2014
Imports:	9
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	5
Followers:	1

MAG3110.lib	Show annotated file Show diff for this revision Revisions of this file
MMA8451Q.lib	Show annotated file Show diff for this revision Revisions of this file
SLCD.lib	Show annotated file Show diff for this revision Revisions of this file
TPM_init.cpp	Show annotated file Show diff for this revision Revisions of this file
TPM_init.h	Show annotated file Show diff for this revision Revisions of this file
TSI.lib	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

Important changes to repositories hosted on mbed.com

Revision 0:ba78bf4f69dc, committed 2014-03-12

Changed in this revision

Repository toolbox

Repository details

Important Information for this Arm website

Important changes to repositories hosted on mbed.com

Revision 0:ba78bf4f69dc, committed 2014-03-12

Changed in this revision

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning