main.cpp

00001 #include "stm32f103c8t6.h"
00002 #include "mbed.h"
00003 #include "WebUSBDFU.h"
00004 
00005 DigitalOut  myled(LED1);
00006 
00007 bool detached = false;
00008 void onDetachRequested() {
00009     detached = true;
00010 }
00011 
00012 void resetIntoBootloader() {
00013     // Turn on write access to the backup registers
00014     __PWR_CLK_ENABLE();
00015     HAL_PWR_EnableBkUpAccess();
00016 
00017     // Write the magic value to force the bootloader to run
00018     BKP->DR2 = 0x544F;
00019     BKP->DR1 = 0x4F42;
00020 
00021     HAL_PWR_DisableBkUpAccess();
00022 
00023     // Reset and let the bootloader run
00024     NVIC_SystemReset();
00025 }
00026 
00027 int main()
00028 {
00029     confSysClock();     //Configure system clock (72MHz HSE clock, 48MHz USB clock)
00030 
00031     /* Note: 1209:0001 is a test VID/PID pair - it should be changed before using in
00032      * a real application */
00033     WebUSBDFU usbDFU(0x1209, 0x0001, 0x0001, false);
00034     usbDFU.attach(onDetachRequested);
00035 
00036     while(1) {
00037         // Check the DFU status
00038         if (!usbDFU.configured()) {
00039             usbDFU.connect(false);
00040         }
00041         if (detached) {
00042             for (int i=0; i < 3; i++) {
00043                 myled = 1;
00044                 wait_ms(100);
00045                 myled = 0;
00046                 wait_ms(100);
00047             }
00048             resetIntoBootloader();
00049         }
00050 
00051         // Do normal stuff
00052         myled = !myled;
00053         wait_ms(500);
00054     }
00055 }
00056