int main() {
systemReset(); // peripherals but not PC
setupCLK();
setupLED();
setupUSB();
setupBUTTON();
setupFLASH();
strobePin(LED_BANK,LED,STARTUP_BLINKS,BLINK_FAST);
/* wait for host to upload program or halt bootloader */
bool no_user_jump = !checkUserCode(USER_CODE_FLASH) && !checkUserCode(USER_CODE_RAM) || readPin(BUTTON_BANK,BUTTON);
int delay_count = 0;
while ((delay_count++ < BOOTLOADER_WAIT)
|| no_user_jump) {
strobePin(LED_BANK,LED,1,BLINK_SLOW);
if (dfuUploadStarted()) {
dfuFinishUpload(); // systemHardReset from DFU once done
}
}
if (checkUserCode(USER_CODE_RAM)) {
jumpToUser(USER_CODE_RAM);
} else if (checkUserCode(USER_CODE_FLASH)) {
jumpToUser(USER_CODE_FLASH);
} else {
// some sort of fault occurred, hard reset
strobePin(LED_BANK,LED,5,BLINK_FAST);
systemHardReset();
}
}
int main()
{
systemReset(); // peripherals but not PC
setupCLK();
setupLEDAndButton();
setupUSB();
setupFLASH();
// strobePin(LED_BANK, LED_PIN, 9999, BLINK_SLOW,LED_ON_STATE);
strobePin(LED_BANK, LED_PIN, STARTUP_BLINKS, BLINK_FAST,LED_ON_STATE);
/* wait for host to upload program or halt bootloader */
bool no_user_jump = (!checkUserCode(USER_CODE_FLASH0X8005000) && !checkUserCode(USER_CODE_FLASH0X8002000)) || readButtonState() ;
int delay_count = 0;
while ((delay_count++ < BOOTLOADER_WAIT) || no_user_jump)
{
strobePin(LED_BANK, LED_PIN, 1, BLINK_SLOW,LED_ON_STATE);
if (dfuUploadStarted())
{
dfuFinishUpload(); // systemHardReset from DFU once done
}
}
if (checkUserCode(USER_CODE_FLASH0X8002000))
{
jumpToUser(USER_CODE_FLASH0X8002000);
}
else
{
if (checkUserCode(USER_CODE_FLASH0X8005000))
{
jumpToUser(USER_CODE_FLASH0X8005000);
}
else
{
// Nothing to execute in either Flash or RAM
strobePin(LED_BANK, LED_PIN, 5, BLINK_FAST,LED_ON_STATE);
systemHardReset();
}
}
return 0;// Added to please the compiler
}
void dfuUpdateByReset(void) {
u8 startState = dfuAppStatus.bState;
userFirmwareLen = 0;
if (startState == appDETACH) {
dfuAppStatus.bState = dfuIDLE;
dfuAppStatus.bStatus = OK;
nvicDisableInterrupts();
usbEnbISR();
} else if (startState == appIDLE || startState == dfuIDLE) {
/* do nothing...might be normal usb bus activity */
} else {
/* we reset from the dfu, reset everything and startover,
which is the correct operation if this is an erroneous
event or properly following a MANIFEST */
dfuAppStatus.bState = dfuIDLE;
dfuAppStatus.bStatus = OK;
systemHardReset();
}
}
/**
* @brief VCP_DataRx
* Data received over USB OUT endpoint are sent over CDC interface
* through this function.
*
* @note
* This function will block any OUT packet reception on USB endpoint
* until exiting this function. If you exit this function before transfer
* is complete on CDC interface (ie. using DMA controller) it will result
* in receiving more data while previous ones are still not sent.
*
* @param Buf: Buffer of data to be received
* @param Len: Number of data received (in bytes)
* @retval Result of the opeartion: USBD_OK if all operations are OK else VCP_FAIL
*/
static uint16_t VCP_DataRx (uint8_t* Buf, uint32_t Len)
{
if(VCP_DTRHIGH) {
if(Len >= 4) {
if(Buf[0] == '1' && Buf[1] == 'E' && Buf[2] == 'A' && Buf[3] == 'F') {
Len = 0;
*(int*)0x20000BFC = 0x4AFC6BB2;
systemHardReset();
}
}
}
VCP_DTRHIGH = 0;
while(Len-- > 0) {
UsbRecBuffer[UsbRecWrite] = *Buf++;
if(UsbRecWrite == UsbRecBufferSize) {
UsbRecWrite = 0;
} else {
UsbRecWrite ++;
}
}
return USBD_OK;
}
int main() {
systemReset(); // peripherals but not PC
boardInit();
strobePin(LED_BANK,LED,STARTUP_BLINKS,BLINK_FAST);
pRCC->APB1ENR |= 0x00800000;
usbAppInit();
setupFLASH();
#ifdef CONFIG_EXTRA_MAIN_CODE
CONFIG_EXTRA_MAIN_CODE
#endif
/* wait for host to upload program or halt bootloader */
while (bootloaderCondition) {
strobePin(LED_BANK,LED,1,BLINK_SLOW);
if (dfuUploadStarted()) {
dfuFinishUpload(); // systemHardReset from DFU once done
}
#ifdef bootloaderExitCondition
if (bootloaderExitCondition)
break;
#endif
}
if (checkUserCode(USER_CODE_RAM)) {
jumpToUser(USER_CODE_RAM);
} else if (checkUserCode(USER_CODE_FLASH)) {
jumpToUser(USER_CODE_FLASH);
} else {
// some sort of fault occurred, hard reset
strobePin(LED_BANK,LED,5,BLINK_FAST);
systemHardReset();
}
return 0;
}
void usbWaitReset(void) {
delay_us(RESET_DELAY);
systemHardReset();
}
int main() {
systemReset(); // peripherals but not PC
setupCLK();
setupLED();
setupBUTTON();
#ifdef STM32F2
setupDisconnectPin();
disconnectUSB();
#else
setupUSB();
setupFLASH();
#endif
strobePin(LED_BANK,LED,STARTUP_BLINKS,BLINK_FAST);
#ifdef STM32F2
// enter built in boot load if magic number found in RAM
if(*START_BOOT_LOADER_MAGIC_ADDR == START_BOOT_LOADER_MAGIC) {
connectUSB();
*START_BOOT_LOADER_MAGIC_ADDR = 0;
jumpToUser(BUILT_IN_BOOT_LOADER);
}
#endif
#ifdef FASTSTART
// for an unknown reason the loader process hangs if the button port is not read
bool pinState = readPin(BUTTON_BANK, BUTTON);
#else
bool buttonStatusHigh = TRUE;
bool buttonStatusLow = FALSE;
for(int i=0; i<10; i++) {
bool pinState = readPin(BUTTON_BANK, BUTTON);
buttonStatusHigh = buttonStatusHigh && pinState;
buttonStatusLow = buttonStatusLow || pinState;
}
/* wait for host to upload program or halt bootloader */
bool no_user_jump = (!checkUserCode(USER_CODE_FLASH) && !checkUserCode(USER_CODE_RAM))
|| buttonStatusHigh;
int delay_count = 0;
while ((delay_count++ < BOOTLOADER_WAIT) || no_user_jump) {
strobePin(LED_BANK,LED,1,BLINK_SLOW);
#ifndef STM32F2
if (dfuUploadStarted()) {
dfuFinishUpload(); // systemHardReset from DFU once done
}
#endif
}
#endif
if (checkUserCode(USER_CODE_RAM)) {
jumpToUser(USER_CODE_RAM);
} else if (checkUserCode(USER_CODE_FLASH)) {
jumpToUser(USER_CODE_FLASH);
} else {
// some sort of fault occurred, hard reset
strobePin(LED_BANK,LED,5,BLINK_FAST);
systemHardReset();
}
return 0; /* can't happen, but placate the compiler */
}
