Mike VanderPloeg
LF20
Dependencies: max32630fthr USBDevice
Diff: main.cpp
- Revision:
- 0:d4d0421bd4e2
- Child:
- 1:6915bb808b58
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Oct 24 23:50:33 2019 +0000
@@ -0,0 +1,290 @@
+///////////////////////
+///
+/// EVKIT
+///
+///////////////////////
+#include "mbed.h"
+#include "max32630fthr.h"
+#include "USBSerial.h"
+#include "string"
+#include "iostream" // std::hex
+
+
+
+
+using namespace std;
+
+// Hardware serial port over DAPLink
+Serial daplink(P2_1, P2_0);
+
+// Virtual serial port over USB
+USBSerial microUSB;
+
+DigitalOut rLED(LED1);
+DigitalOut gLED(LED2);
+DigitalOut bLED(LED3);
+
+// SPI pins
+DigitalOut clk(P5_0);
+DigitalInOut data(P5_1);
+DigitalOut csb(P3_0);
+
+// Control pins
+DigitalOut pwrdn(P4_0);
+
+MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
+
+// subroutines
+int ascii(char a, char b);
+int ldo(char a, char b);
+int spiWrite( char a, char b);
+int spiRead( char a );
+int h( char a );
+
+// main() runs in its own thread in the OS
+// (note the calls to Thread::wait below for delays)
+int main()
+{
+ int c;
+ char buf[30]; // strings entered can only be 30 characters
+
+
+ daplink.printf("daplink serial port\r\n");
+ microUSB.printf("micro USB serial port\r\n");
+ rLED = LED_OFF;
+ gLED = LED_OFF;
+ bLED = LED_OFF;
+
+ data.output();
+
+ csb = 1;
+ clk = 0;
+ data = 0;
+ pwrdn = 1;
+
+ pegasus.max14690.ldo3SetVoltage(3000);
+ pegasus.max14690.ldo2SetVoltage(3000);
+ wait(1.0);
+ gLED=LED_ON;
+ wait_ms(500);
+ gLED=LED_OFF;
+ rLED=LED_ON;
+ wait_ms(500);
+ rLED=LED_OFF;
+ bLED=LED_ON;
+ wait_ms(500);
+ bLED=LED_OFF;
+ wait_ms(500);
+ gLED=LED_ON;
+
+ while(1) {
+ microUSB.scanf("%s", buf);
+ wait_us(10);
+
+ if( strlen(buf) > 0 ) {
+
+ // ping command, responds with pong
+ if(strncmp(buf,"ping", 4)==0) {
+ microUSB.printf("pong\r\n");
+ gLED=LED_ON;
+ wait(0.01); // in seconds
+ gLED=LED_OFF;
+ wait(0.01);
+ gLED=LED_ON;
+ }
+
+ // "evkit"
+ else if ( strncmp(buf, "evki", 4 )==0 ) {
+ microUSB.printf("true\r\n");
+ }
+
+ // spi write command: spiw.addr.data
+ // addr and data in hex
+ else if (strncmp(buf,"spiw",4)==0) {
+ int resp = 0;
+ // payload[0] is address
+ // payload[1] is data
+ char payload[2];
+ payload[0] = ascii((int)buf[5],(int)buf[6]);
+ payload[1] = ascii((int)buf[8],(int)buf[9]);
+ resp = spiWrite(payload[0], payload[1]);
+ microUSB.printf("ack.%i\r\n",resp);
+ gLED=LED_OFF;
+ wait(0.01); // in seconds
+ gLED=LED_ON;
+ wait(0.01);
+ gLED=LED_OFF;
+ }
+
+ else if (strncmp(buf, "spir",4)==0) {
+ int resp = 0;
+ char payload[1];
+ payload[0] = ascii((int)buf[5],(int)buf[6]);
+ resp = spiRead(payload[0]);
+ microUSB.printf("ack.%i\r\n", resp);
+ gLED=LED_OFF;
+ wait(0.01); // in seconds
+ gLED=LED_ON;
+ wait(0.01);
+ gLED=LED_OFF;
+ }
+
+ else if (strncmp(buf, "pwrdn",5)==0) {
+ int val;
+ if( buf[6] == 48 ) { val=0; gLED=LED_ON; rLED=LED_OFF; }
+ else { val=1;gLED=LED_OFF; rLED=LED_ON; }
+ pwrdn = val;
+ microUSB.printf("ack.%i\r\n",val);
+ }
+
+ // set ldo voltage
+ else if (strncmp(buf,"ldo",3)==0) {
+ int setting = ldo((int)buf[4],(int)buf[5]);
+ pegasus.max14690.ldo3SetVoltage(setting*100);
+ pegasus.max14690.ldo2SetVoltage(setting*100);
+ wait(0.01);
+ microUSB.printf("ack.%i\r\n",setting);
+ gLED=LED_ON;
+ wait(0.01); // in seconds
+ gLED=LED_OFF;
+ wait(0.01);
+ gLED=LED_ON;
+ }
+ }
+ }
+
+}
+
+int spiWrite( char address, char dat ) {
+ int i = 0;
+ csb = 0;
+ wait_us(1.0);
+
+ // first write address
+ for( i = 7; i>=0; i--) {
+
+ clk = 0;
+ wait(0.000001);
+ data = (1<<i) & address;
+ wait(0.000001);
+ clk = 1;
+ wait(0.000002);
+ }
+ for( i = 7; i>=0; i--) {
+ clk = 0;
+ wait(0.000001);
+ data = (1<<i) & dat;
+ wait(0.000001);
+ clk = 1;
+ wait(0.000002);
+ }
+ csb = 1;
+ clk = 0;
+ return 1;
+
+}
+
+int spiRead( char address ) {
+ int i = 0;
+ int dat = 0;
+ clk =0 ;
+ csb = 0;
+ wait_us(1);
+
+ // first write address
+ for( i = 7; i>=0; i--) {
+ clk = 0;
+ wait_us(1);
+ data = (1<<i) & address;
+ wait_us(1);;
+ clk = 1;
+ wait_us(1);
+ }
+ // load dummy byte, all zeros in this case
+ data = 0;
+ for( i = 7; i>=0; i--){
+ clk = 0;
+ wait_us(1);
+ clk = 1;
+ wait_us(1);
+ }
+ // read byte from part
+ data.input();
+ for( i = 7; i>=0; i--){
+ clk = 0;
+ wait_us(2);
+ clk = 1;
+ if(data > 0) dat = dat + (1<<i);
+ wait_us(1);
+ }
+ data.output();
+ clk = 0;
+ csb = 1;
+ return dat;
+}
+
+int h(char a)
+{
+ int intval = (a >= 'A') ? (a - 'A' + 10) : (a - '0');
+ return intval;
+}
+
+int ascii(char a, char b)
+{
+ int val1 = 0;
+ int val2 = 0;
+ int val = 0;
+ if(a>64 && a<71)
+ {
+ val1 = (int)a-55;
+ }
+ else if(a>96 && a<103)
+ {
+ val1 = (int)a-87;
+ }
+ else val1 = (int)a-48;
+
+ if(b>64 && b<71)
+ {
+ val2 = (int)b-55;
+ }
+ else if(b>96 && b<103)
+ {
+ val2 = (int)b-87;
+ }
+ else val2 = (int)b-48;
+
+ val=16*val1+val2;
+
+ return val;
+}
+
+int ldo(char a, char b)
+{
+ int val1 = 0;
+ int val2 = 0;
+ int val = 0;
+ if(a>64 && a<71)
+ {
+ val1 = (int)a-55;
+ }
+ else if(a>96 && a<103)
+ {
+ val1 = (int)a-87;
+ }
+ else val1 = (int)a-48;
+
+ if(b>64 && b<71)
+ {
+ val2 = (int)b-55;
+ }
+ else if(b>96 && b<103)
+ {
+ val2 = (int)b-87;
+ }
+ else val2 = (int)b-48;
+
+ val=10*val1+val2;
+
+ return val;
+}
\ No newline at end of file