mirror of
https://github.com/IcedRooibos/py32f0-template.git
synced 2025-10-31 09:52:05 -07:00
91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
/**
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* Demo: Write Option Bytes
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*
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* Board: PY32F003W1XS (SOP16)
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*
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* This demo shows how to config reset pin as gpio output
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*/
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#include "main.h"
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#include "py32f0xx_bsp_printf.h"
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#include "py32f0xx_bsp_clock.h"
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static void APP_GPIOConfig(void);
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static void APP_FlashSetOptionBytes(void);
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int main(void)
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{
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BSP_RCC_HSI_24MConfig();
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BSP_USART_Config(115200);
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printf("PY32F0xx GPIO Example\r\nClock: %ld\r\n", SystemCoreClock);
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LL_mDelay(1000);
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if(READ_BIT(FLASH->OPTR, FLASH_OPTR_NRST_MODE) == OB_RESET_MODE_RESET)
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{
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printf("Configurate RESET as GPIO\r\n");
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/* This will reset the MCU */
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APP_FlashSetOptionBytes();
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}
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else
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{
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printf("RESET has been configurated as GPIO\r\n");
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}
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/* Don't config GPIO before changing the option bytes */
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APP_GPIOConfig();
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while (1)
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{
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LL_GPIO_TogglePin(GPIOA, LL_GPIO_PIN_0);
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LL_GPIO_TogglePin(GPIOF, LL_GPIO_PIN_0);
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printf("echo\r\n");
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LL_mDelay(1000);
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}
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}
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static void APP_GPIOConfig(void)
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{
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// PA0
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
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LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_0, LL_GPIO_MODE_OUTPUT);
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// PF0 -> GPIO output, PF2 -> analog
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOF);
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LL_GPIO_SetPinMode(GPIOF, LL_GPIO_PIN_0, LL_GPIO_MODE_OUTPUT);
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// PY32F003W1XS: PF0 and PF2 share the same pin, it's recommended to set PF2 as analog
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LL_GPIO_SetPinMode(GPIOF, LL_GPIO_PIN_2, LL_GPIO_MODE_ANALOG);
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}
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static void APP_FlashSetOptionBytes(void)
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{
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FLASH_OBProgramInitTypeDef OBInitCfg;
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LL_FLASH_Unlock();
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LL_FLASH_OB_Unlock();
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OBInitCfg.OptionType = OPTIONBYTE_USER;
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OBInitCfg.USERType = OB_USER_BOR_EN | OB_USER_BOR_LEV | OB_USER_IWDG_SW | OB_USER_WWDG_SW | OB_USER_NRST_MODE | OB_USER_nBOOT1;
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/*
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* The default value: OB_BOR_DISABLE | OB_BOR_LEVEL_3p1_3p2 | OB_IWDG_SW | OB_WWDG_SW | OB_RESET_MODE_RESET | OB_BOOT1_SYSTEM;
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*/
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OBInitCfg.USERConfig = OB_BOR_DISABLE | OB_BOR_LEVEL_3p1_3p2 | OB_IWDG_SW | OB_WWDG_SW | OB_RESET_MODE_GPIO | OB_BOOT1_SYSTEM;
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LL_FLASH_OBProgram(&OBInitCfg);
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LL_FLASH_Lock();
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LL_FLASH_OB_Lock();
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/* Reload option bytes */
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LL_FLASH_OB_Launch();
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}
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void APP_ErrorHandler(void)
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{
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while (1);
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}
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#ifdef USE_FULL_ASSERT
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void assert_failed(uint8_t *file, uint32_t line)
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{
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while (1);
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}
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#endif /* USE_FULL_ASSERT */
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