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stm32f1: Add support for HID Bootloader

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Signed-off-by: Eric Callahan <arksine.code@gmail.com>
This commit is contained in:
Arksine
2020-04-24 14:29:56 -04:00
committed by KevinOConnor
parent 4b9b705b99
commit 05efccc874
4 changed files with 42 additions and 5 deletions
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11
src/stm32/stm32f1.c
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@@ -112,13 +112,18 @@ gpio_peripheral(uint32_t gpio, uint32_t mode, int pullup)
void
usb_request_bootloader(void)
{
if (!CONFIG_STM32_FLASH_START_2000)
if (!(CONFIG_STM32_FLASH_START_2000 || CONFIG_STM32_FLASH_START_800))
return;
// Enter "stm32duino" bootloader
// Enter "stm32duino" or HID bootloader
irq_disable();
RCC->APB1ENR |= RCC_APB1ENR_PWREN | RCC_APB1ENR_BKPEN;
PWR->CR |= PWR_CR_DBP;
BKP->DR10 = 0x01;
if (CONFIG_STM32_FLASH_START_800)
// HID Bootloader magic key
BKP->DR4 = 0x424C;
else
// stm32duino bootloader magic key
BKP->DR10 = 0x01;
PWR->CR &=~ PWR_CR_DBP;
NVIC_SystemReset();
}