ARM, RISC-V контроллеры

Мопед не мой, с "Миландровского форума". И кстати, отладочную печать можно и через SWD/SWO вывести.  void HardFault_Handler() { unsigned int contr_reg; contr_reg = __get_CONTROL(); if(contr_reg&2) { asm("MRS R0, PSP"); } else{ asm("MRS R0, MSP"); } asm("B (Hard_fault_handler_c)"); //top of stack is in R0. It is passed to C-function. } void Hard_fault_handler_c(unsigned int* hardfault_args) { unsigned int stacked_r0; unsigned int stacked_r1; unsigned int stacked_r2; unsigned int stacked_r3; unsigned int stacked_r12; unsigned int stacked_lr; unsigned int stacked_pc; unsigned int stacked_psr; stacked_r0 = ((unsigned long) hardfault_args[0]); stacked_r1 = ((unsigned long) hardfault_args[1]); stacked_r2 = ((unsigned long) hardfault_args[2]); stacked_r3 = ((unsigned long) hardfault_args[3]); stacked_r12 = ((unsigned long) hardfault_args[4]); stacked_lr = ((unsigned long) hardfault_args[5]); stacked_pc = ((unsigned long) hardfault_args[6]); stacked_psr = ((unsigned long) hardfault_args[7]); printf ("[Hard fault handler]\r\n"); printf ("R0 = 0x%x\r\n", stacked_r0); printf ("R1 = 0x%x\r\n", stacked_r1); printf ("R2 = 0x%x\r\n", stacked_r2); printf ("R3 = 0x%x\r\n", stacked_r3); printf ("R12 = 0x%x\r\n", stacked_r12); printf ("LR = 0x%x\r\n", stacked_lr); printf ("PC = 0x%x\r\n", stacked_pc); printf ("PSR = 0x%x\r\n", stacked_psr); while(1); } ЗЫ прототип fputc должен быть переопределен для работы с функцией printf. #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f) PUTCHAR_PROTOTYPE{ UART_SendData(MDR_UART_DEBUG, (uint8_t) ch); // Loop until the end of transmission while (UART_GetFlagStatus(MDR_UART_DEBUG, UART_FLAG_TXFF) == SET); return ch; }