Example program of using USB mass storage device (USB flash disk) with STM32F407VET6 boards (compatible with Seed Arch Max). This is a fork of https://os.mbed.com/users/va009039/code/F401RE-USBHostMSD_HelloWorld/
Dependencies: mbed FATFileSystem USBHost-STM32F4
Diff: main.cpp
- Revision:
- 0:4ea663e6aa00
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Tue Feb 19 21:35:40 2019 +0000 @@ -0,0 +1,51 @@ +#include "USBHostMSD.h" + +DigitalOut led1(LED1); + +int main() +{ + printf("Starting..\r\n"); + + USBHostMSD msd("usb"); + + printf("Connecting the device\r\n"); + + if (!msd.connect()) { + error("USB mass storage device not found.\n"); + } + + FILE* fp = fopen("/usb/test1.txt", "a"); + if (fp) { + fprintf(fp, "Hello from mbed.\n"); + for (int i = 0; i < 21; i++) { + fprintf(fp, " %d", i); + led1 = !led1; + } + + fprintf(fp, "\n"); + fclose(fp); + } + + fp = fopen("/usb/test1.txt", "r"); + if (fp) { + int n = 0; + while (1) { + int c = fgetc(fp); + if (c == EOF) { + break; + } + + printf("%c", c); + n++; + led1 = !led1; + } + + fclose(fp); + printf("%d bytes\n", n); + } + + while (1) { + led1 = !led1; + wait_ms(200); + } +}