void setupUSB (void) {
setupDisconnectPin();
disconnectUSB();
/* turn on the USB clock */
#ifdef STM32F2
pRCC->AHB1ENR |= RCC_AHB1ENR_OTGHSEN;
#else
pRCC->APB1ENR |= RCC_APB1ENR_USB_CLK;
#endif
/* initialize the usb application */
connectUSB();
usbAppInit();
}
void setupUSB (void) {
/* enable USB DISC Pin */
pRCC->APB2ENR |= RCC_APB2ENR_USB;
/* Setup USB DISC pin as output open drain */
SET_REG(USB_DISC_CR,
(GET_REG(USB_DISC_CR) & USB_DISC_CR_MASK) | USB_DISC_CR_OUTPUT_OD);
setPin(USB_DISC_BANK, USB_DISC);
/* turn on the USB clock */
pRCC->APB1ENR |= RCC_APB1ENR_USB_CLK;
/* initialize the USB application */
resetPin(USB_DISC_BANK, USB_DISC); /* present ourselves to the host */
usbAppInit();
}
void setupUSB (void) {
#ifdef HAS_MAPLE_HARDWARE
/* Setup USB DISC pin as output open drain */
SET_REG(GPIO_CR(USB_DISC_BANK,USB_DISC),(GET_REG(GPIO_CR(USB_DISC_BANK,USB_DISC)) & crMask(USB_DISC)) | CR_OUTPUT_OD << CR_SHITF(LED_PIN));
gpio_write_bit(USB_DISC_BANK,USB_DISC,1);
/* turn on the USB clock */
//pRCC->APB1ENR |= RCC_APB1ENR_USB_CLK;// done in setupCLK()
gpio_write_bit(USB_DISC_BANK,USB_DISC,0); /* present ourselves to the host */
#else
/* Generic boards don't have disconnect hardware, so we drive PA12 which is connected to the usb D+ line*/
#define USB_DISC_BANK GPIOA
#define USB_DISC 12
SET_REG(GPIO_CR(USB_DISC_BANK,USB_DISC),
(GET_REG(GPIO_CR(USB_DISC_BANK,USB_DISC)) & crMask(USB_DISC)) | CR_OUTPUT_PP << CR_SHITF(USB_DISC));
gpio_write_bit(USB_DISC_BANK,USB_DISC,0); /* present ourselves to the host */
volatile unsigned int delay;
for(delay = 0;delay<256;delay++);
// volatile unsigned x = 1024; do { ; }while(--x);// wait a moment
/* turn on the USB clock */
SET_REG(GPIO_CR(USB_DISC_BANK,USB_DISC),
(GET_REG(GPIO_CR(USB_DISC_BANK,USB_DISC)) & crMask(USB_DISC)) | CR_INPUT << CR_SHITF(USB_DISC)); //Sets the PA12 as floating input
// pRCC->APB1ENR |= RCC_APB1ENR_USB_CLK;
#endif
/* initialize the usb application */
wTransferSize=getFlashPageSize();
u8_usbConfigDescriptorDFU[41]=(wTransferSize & 0x00FF);
u8_usbConfigDescriptorDFU[42]=(wTransferSize & 0xFF00)>>8;
u8_usbFunctionalDescriptor[5]=(wTransferSize & 0x00FF);
u8_usbFunctionalDescriptor[6]=(wTransferSize & 0xFF00)>>8;
usbAppInit();
}
void setupUSB (void) {
u32 rwmVal; /* read-write-modify place holder var */
/* Setup the USB DISC Pin */
rwmVal = GET_REG(RCC_APB2ENR);
rwmVal |= 0x00000010;
SET_REG(RCC_APB2ENR,rwmVal);
// todo, macroize usb_disc pin
/* Setup GPIOC Pin 12 as OD out */
rwmVal = GET_REG(GPIO_CRH(GPIOC));
rwmVal &= 0xFFF0FFFF;
rwmVal |= 0x00050000;
setPin (GPIOC,12);
SET_REG(GPIO_CRH(GPIOC),rwmVal);
pRCC->APB1ENR |= 0x00800000;
/* initialize the usb application */
resetPin (GPIOC,12); /* present ourselves to the host */
usbAppInit();
}
void setupUSB (void) {
/* enable USB DISC Pin */
#ifdef STM32F2
#if !defined(BOARD_DiscoveryF4)
pRCC->AHB1ENR |= RCC_AHB1ENR_USB;
GPIO_TypeDef *p = (GPIO_TypeDef *)USB_DISC_BANK;
/* set to output */
p->MODER = 1 << (2*USB_DISC);
/* Configure pins speed to 100 MHz */
//p->OSPEEDR = 0xffffc00f; // 2 bit/port medium speed = %01
/* Configure pins Output type to open drain */
p->OTYPER = 1 << (2*USB_DISC);
/* No pull-up, pull-down for PEx pins */
//p->PUPDR = 0x00000000;
#endif
#else
pRCC->APB2ENR |= RCC_APB2ENR_USB;
/* Setup USB DISC pin as output open drain */
SET_REG(USB_DISC_CR, (GET_REG(USB_DISC_CR) & USB_DISC_CR_MASK) | USB_DISC_CR_OUTPUT_OD); // ala42 just pull down external pull up
//SET_REG(USB_DISC_CR, (GET_REG(USB_DISC_CR) & USB_DISC_CR_MASK) | USB_DISC_CR_OUTPUT_PP); // ala42 actively pull up USBDP
#endif
disconnectUSB();
/* turn on the USB clock */
#ifdef STM32F2
pRCC->AHB1ENR |= RCC_AHB1ENR_OTGHSEN;
#else
pRCC->APB1ENR |= RCC_APB1ENR_USB_CLK;
#endif
/* initialize the usb application */
connectUSB();
usbAppInit();
}
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;
}
