nexpaq / Mbed OS PICO_USB_I2C_SPI

I2C/SPI/GPIO example for MAX32625PICO board

Dependencies:   SerialInterface USBDevice max32625pico

Fork of PICO_USB_I2C_SPI by Greg Steiert

main.cpp@17:b4c32ceab541, 2018-08-22 (annotated)

Committer:
switches
Date:
Wed Aug 22 17:38:12 2018 +0000
Revision:
17:b4c32ceab541
Parent:
15:e8b28cadf100 
Switched to official mbed library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
switches 0:60a522ae2e35 1 #include "mbed.h"
switches 13:fed6ff32bf5d 2 #include "rtos.h"
switches 1:6923b075c8d7 3 #include "USBSerial.h"
switches 14:dd5a96c353ed 4 #include "max32625pico.h"
switches 3:aa55728c8e09 5 #include "SerialInterface.h"
switches 3:aa55728c8e09 6
switches 15:e8b28cadf100 7 #define USB_MAX_RESP_LENGTH 511
switches 15:e8b28cadf100 8 #define USB_MAX_CMD_LENGTH 511
switches 0:60a522ae2e35 9
switches 14:dd5a96c353ed 10 // configure VDDIOH to local 3.3V supply, set dipVio and swdVio to 1.8V supply
switches 14:dd5a96c353ed 11 MAX32625PICO pico(MAX32625PICO::IOH_3V3, MAX32625PICO::VIO_1V8, MAX32625PICO::VIO_1V8);
switches 0:60a522ae2e35 12
switches 14:dd5a96c353ed 13 // Virtual serial port over USB
switches 14:dd5a96c353ed 14 USBSerial microUSB(0x0B6A, 0x4360);
switches 3:aa55728c8e09 15
switches 3:aa55728c8e09 16 // Serial Interfaces
switches 13:fed6ff32bf5d 17 I2C i2c(P1_6, P1_7);
switches 14:dd5a96c353ed 18 SPI spi(P0_5, P0_6, P0_4);
switches 13:fed6ff32bf5d 19 DigitalInOut gpio[] = {P0_0, P0_1, P0_2, P0_3, P4_4, P4_5, P4_6, P4_7};
switches 9:e59eb5f5ce32 20 AnalogIn ain[] = {AIN_0, AIN_1, AIN_2, AIN_3, AIN_4, AIN_5, AIN_6, AIN_7};
switches 9:e59eb5f5ce32 21
switches 9:e59eb5f5ce32 22 // Serial Interface Adapter
switches 15:e8b28cadf100 23 SerialInterface serInt(&i2c, &spi, gpio, ain);
switches 3:aa55728c8e09 24
switches 3:aa55728c8e09 25 // Threads
switches 3:aa55728c8e09 26 Thread threadUSB;
switches 3:aa55728c8e09 27
switches 2:57500e991166 28 DigitalOut rLED(LED1);
switches 2:57500e991166 29 DigitalOut gLED(LED2);
switches 2:57500e991166 30 DigitalOut bLED(LED3);
switches 0:60a522ae2e35 31
switches 3:aa55728c8e09 32 void usb_thread()
switches 3:aa55728c8e09 33 {
switches 15:e8b28cadf100 34 char obuf[USB_MAX_RESP_LENGTH +1];
switches 15:e8b28cadf100 35 char ibuf[USB_MAX_CMD_LENGTH +1];
switches 3:aa55728c8e09 36 int i = 0;
switches 3:aa55728c8e09 37
switches 5:2436ae0a9eb1 38 microUSB.printf("micro USB serial port\r\n");
switches 5:2436ae0a9eb1 39
switches 3:aa55728c8e09 40 while(1) {
switches 3:aa55728c8e09 41 if (microUSB.readable()) {
switches 3:aa55728c8e09 42 ibuf[i]=microUSB.getc();
switches 3:aa55728c8e09 43 if (ibuf[i]!='\r') {
switches 3:aa55728c8e09 44 if (i < USB_MAX_CMD_LENGTH) {
switches 3:aa55728c8e09 45 i += 1;
switches 3:aa55728c8e09 46 }
switches 3:aa55728c8e09 47 } else {
switches 15:e8b28cadf100 48 bLED = LED_ON;
switches 3:aa55728c8e09 49 if (i < USB_MAX_CMD_LENGTH) {
switches 3:aa55728c8e09 50 ibuf[i]=0;
switches 3:aa55728c8e09 51 // microUSB.printf("UART CMD: %s=", ibuf);
switches 3:aa55728c8e09 52 serInt.call(ibuf, obuf);
switches 3:aa55728c8e09 53 microUSB.printf("%s\r\n", obuf);
switches 3:aa55728c8e09 54 } else {
switches 3:aa55728c8e09 55 microUSB.printf("[-1]\r\n");
switches 3:aa55728c8e09 56 }
switches 3:aa55728c8e09 57 i=0;
switches 15:e8b28cadf100 58 bLED = LED_OFF;
switches 3:aa55728c8e09 59 }
switches 3:aa55728c8e09 60 }
switches 3:aa55728c8e09 61 }
switches 3:aa55728c8e09 62 }
switches 3:aa55728c8e09 63
switches 3:aa55728c8e09 64
switches 0:60a522ae2e35 65 // main() runs in its own thread in the OS
switches 0:60a522ae2e35 66 // (note the calls to Thread::wait below for delays)
switches 0:60a522ae2e35 67 int main()
switches 0:60a522ae2e35 68 {
switches 2:57500e991166 69 rLED = LED_ON;
switches 2:57500e991166 70 gLED = LED_ON;
switches 2:57500e991166 71 bLED = LED_OFF;
switches 3:aa55728c8e09 72
switches 14:dd5a96c353ed 73 // Configure P4_4 through P4_7 for 3.3V I/O
switches 14:dd5a96c353ed 74 pico.vddioh(P4_4, MAX32625PICO::VIO_IOH);
switches 14:dd5a96c353ed 75 pico.vddioh(P4_5, MAX32625PICO::VIO_IOH);
switches 14:dd5a96c353ed 76 pico.vddioh(P4_6, MAX32625PICO::VIO_IOH);
switches 14:dd5a96c353ed 77 pico.vddioh(P4_7, MAX32625PICO::VIO_IOH);
switches 2:57500e991166 78
switches 2:57500e991166 79 rLED = LED_OFF;
switches 5:2436ae0a9eb1 80
switches 3:aa55728c8e09 81 // Start USB serial thread
switches 3:aa55728c8e09 82 threadUSB.start(usb_thread);
switches 5:2436ae0a9eb1 83
switches 3:aa55728c8e09 84 // Start main loop
switches 1:6923b075c8d7 85 while(1) {
switches 3:aa55728c8e09 86 Thread::wait(500);
switches 3:aa55728c8e09 87 gLED = !gLED;
switches 0:60a522ae2e35 88 }
switches 0:60a522ae2e35 89 }
switches 0:60a522ae2e35 90