firmware defines

firmware/lib/dfu/dfu.cpp

@@ -0,0 +1,26 @@
+#include "stm32g4xx_hal.h"
+#include "stm32g4xx_hal_conf.h"
+#include "stm32g4xx_hal_rcc.h"
+
+void perform_system_reset(void){
+	__disable_irq();
+	NVIC_SystemReset();
+}
+
+// https://stm32f4-discovery.net/2017/04/tutorial-jump-system-memory-software-stm32/
+void jump_to_bootloader(void){
+	__enable_irq();
+	HAL_RCC_DeInit();
+	HAL_DeInit();
+	SysTick->CTRL = SysTick->LOAD = SysTick->VAL = 0;
+	__HAL_SYSCFG_REMAPMEMORY_SYSTEMFLASH();
+
+	const uint32_t p = (*((uint32_t *) 0x1FFF0000));
+	__set_MSP( p );
+
+	void (*SysMemBootJump)(void);
+	SysMemBootJump = (void (*)(void)) (*((uint32_t *) 0x1FFF0004));
+	SysMemBootJump();
+
+	while( 1 ) {}
+}

firmware/lib/dfu/dfu.h

@@ -0,0 +1,7 @@
+#ifndef BOOTLOADER_H
+#define BOOTLOADER_H
+
+void perform_system_reset(void);
+void jump_to_bootloader(void);
+
+#endif