diff options
Diffstat (limited to 'src/stm32f1/usbserial.c')
| -rw-r--r-- | src/stm32f1/usbserial.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/stm32f1/usbserial.c b/src/stm32f1/usbserial.c index 641aacc0..7eeb3421 100644 --- a/src/stm32f1/usbserial.c +++ b/src/stm32f1/usbserial.c @@ -5,8 +5,10 @@ // This file may be distributed under the terms of the GNU GPLv3 license. #include <string.h> // NULL +#include "autoconf.h" // CONFIG_STM_FLASH_START_2000 #include "board/gpio.h" // gpio_out_setup #include "board/io.h" // writeb +#include "board/irq.h" // irq_disable #include "board/usb_cdc.h" // usb_notify_ep0 #include "board/usb_cdc_ep.h" // USB_CDC_EP_BULK_IN #include "internal.h" // GPIO @@ -214,6 +216,15 @@ usb_set_configure(void) void usb_request_bootloader(void) { + if (!CONFIG_STM_FLASH_START_2000) + return; + // Enter "stm32duino" bootloader + irq_disable(); + RCC->APB1ENR |= RCC_APB1ENR_PWREN | RCC_APB1ENR_BKPEN; + PWR->CR |= PWR_CR_DBP; + BKP->DR10 = 0x01; + PWR->CR &=~ PWR_CR_DBP; + NVIC_SystemReset(); } |