Example program demonstrates SD card library
Dependencies: SDFileSystem USBDevice max32630fthr
Fork of FTHR_SD_Demo by
This example program writes "Hello World!" into a file named "myfile.txt" on the card inserted into the microSD card connector.
Diff: main.cpp
- Revision:
- 1:90313362ec11
- Parent:
- 0:60a522ae2e35
- Child:
- 3:247c750f9f3d
--- a/main.cpp Fri Nov 11 21:08:36 2016 +0000 +++ b/main.cpp Wed Nov 16 01:02:04 2016 +0000 @@ -1,28 +1,33 @@ #include "mbed.h" - -#define MAX14690_I2C_ADDR 0x50 +#include "max32630fthr.h" +#include "SDFileSystem.h" -DigitalOut led1(LED1); -I2C i2cm2(P5_7, P6_0); +DigitalOut rLED(LED1); +DigitalOut gLED(LED2); +SDFileSystem sd(P0_5, P0_6, P0_4, P0_7, "sd"); // mosi, miso, sclk, cs // main() runs in its own thread in the OS // (note the calls to Thread::wait below for delays) int main() { - char data[5]; - data[0] = 0x14; // I2C address for first register (LDO2 CFG) - data[1] = 0x00; // Dissable LDO2 - data[2] = 0x19; // Set voltage to 3.3V - data[3] = 0x00; // Dissable LDO3 - data[4] = 0x19; // Set voltage to 3.3V - i2cm2.write(MAX14690_I2C_ADDR, data, 5); - data[1] = 0x02; // Enable LDO2 - data[3] = 0x02; // Enable LDO3 - i2cm2.write(MAX14690_I2C_ADDR, data, 5); + gLED = LED_OFF; + rLED = LED_ON; + + max32630fthrInit(); + vddioh(P0_4, TRUE); + vddioh(P0_5, TRUE); + vddioh(P0_6, TRUE); + vddioh(P0_7, TRUE); + gLED = LED_ON; + + FILE *fp = fopen("/sd/myfile.txt", "w"); + fprintf(fp, "Hello World!\n"); + fclose(fp); + rLED = LED_OFF; while (true) { - led1 = !led1; + gLED = !gLED; Thread::wait(500); } }