94 lines
2.6 KiB
C
94 lines
2.6 KiB
C
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/*
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* main.c
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*
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* Created on: Jun 23, 2023
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* Author: true
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*
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* UART bootloader for HK32F030M MCU. Tested on HK32F030MF4P6.
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* Button or no-code activation. Otherwise instant jump to user code.
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* Should be easy to port to other platforms. Needs less than 2K RAM.
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*
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* Just a couple days before completing this, LCSC removed this part...
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* it likely won't be very common now, so what's the point? =(
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*/
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#include "hk32f030m.h"
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#include "flash.h"
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#include "usart.h"
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#include "user_io.h"
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#include "xmodem.h"
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int main(void)
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{
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uint8_t btn;
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//volatile uint16_t timeout = 0xffff;
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// ensure the bootloader is write protected
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// TODO
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// configure button and LED
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user_io_init();
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// need a small delay to ensure the button pullup/down will charge/discharge pin capacitance
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//while (--timeout);
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// get button state
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btn = BTN_PORT->IDR & (1 << BTN_PIN);
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#if BTN_ACT_DIR == 0
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btn = (btn == 0) ? 1 : 0;
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#endif
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// bootloader activation methods
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if (btn // button pushed
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|| (*(volatile uint32_t *)USER_APP_START_ADDR) == 0x00000000 // flash empty
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|| (*(volatile uint32_t *)USER_APP_START_ADDR) == 0xFFFFFFFF) { // flash empty
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// bootloader is activated, show it
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user_led_init();
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// configure serial comms and print welcome banner
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// todo: implement autobaud?
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comm_init();
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const uint8_t *banner_bar = (uint8_t *)"\r\n================================================\r\n";
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comm_tx_str((uint8_t *)banner_bar);
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comm_tx_str((uint8_t *)"trueControl HK32F XMODEM Flash Bootloader v0.0.1");
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comm_tx_str((uint8_t *)banner_bar);
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// wait for firmware load or reset
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while(1) {
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comm_tx_str((uint8_t*)"\r\nsend binary file using XMODEM to update firmware");
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comm_tx_str((uint8_t*)"\r\nthe first data block will take time. it's normal\r\n\r\n");
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xmodem_receive();
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// if xmodem exits, there was a failure. repeat the process.
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comm_tx_str((uint8_t*)"\r\nfailed to update. try again.\r\n");
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}
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}
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// bootloader is not activated; jump to user code
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jump_to_user_app();
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(char* file , uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif /* USE_FULL_ASSERT */
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