mirror of
https://github.com/IcedRooibos/py32f0-template.git
synced 2025-10-31 01:42:04 -07:00
129 lines
3.3 KiB
C
129 lines
3.3 KiB
C
/***
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* Demo: Waveshare 1.54' E-Paper
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*
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* PY32 E-Paper
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* PA0 ------> Reset
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* PA1 ------> CLK/SCK
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* PA4 ------> Busy
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* PA5 ------> DC/A0
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* PA6 ------> CSN
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* PA7 ------> DIN/MOSI
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*
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* PA2 ------> TX
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* PA3 ------> RX
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*/
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#include <string.h>
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#include "main.h"
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#include "py32f0xx_bsp_clock.h"
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#include "py32f0xx_bsp_printf.h"
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#include "EPD_Test.h"
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static void APP_GPIOConfig(void);
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static void APP_SPIConfig(void);
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int main(void)
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{
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BSP_RCC_HSI_PLL48MConfig();
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BSP_USART_Config(115200);
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printf("SPI Demo: Waveshare 1.54' E-Paper\r\nClock: %ld\r\n", SystemCoreClock);
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APP_GPIOConfig();
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APP_SPIConfig();
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EPD_test();
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while(1);
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}
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uint8_t SPI_TxRxByte(uint8_t data)
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{
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uint8_t SPITimeout = 0xFF;
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/* Check the status of Transmit buffer Empty flag */
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while (READ_BIT(SPI1->SR, SPI_SR_TXE) == RESET)
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{
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if (SPITimeout-- == 0) return 0;
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}
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LL_SPI_TransmitData8(SPI1, data);
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SPITimeout = 0xFF;
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while (READ_BIT(SPI1->SR, SPI_SR_RXNE) == RESET)
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{
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if (SPITimeout-- == 0) return 0;
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}
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// Read from RX buffer
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return LL_SPI_ReceiveData8(SPI1);
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}
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static void APP_GPIOConfig(void)
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{
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LL_GPIO_InitTypeDef GPIO_InitStruct;
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// PA6 CS
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LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_6, LL_GPIO_MODE_OUTPUT);
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// PA5 CE
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LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_5, LL_GPIO_MODE_OUTPUT);
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// PA0 RESET
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LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_0, LL_GPIO_MODE_OUTPUT);
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/* PA4 Busy (input) */
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GPIO_InitStruct.Pin = LL_GPIO_PIN_4;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_INPUT;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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}
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/**
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* SPI1 Alternative Function Pins
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* SPI1_SCK: PA1_AF0, PA2_AF10, PA5_AF0, PA9_AF10, PB3_AF0
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* SPI1_MISO: PA0_AF10, PA6_AF0, PA7_AF10, PA11_AF0, PA13_AF10, PB4_AF0
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* SPI1_MOSI: PA1_AF10, PA2_AF0, PA3_AF10, PA7_AF0, PA8_AF10, PA12_AF0, PB5_AF0
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* SPI1_NSS: PA4_AF0, PA10_AF10, PA15_AF0, PB0_AF0, PF1_AF10, PF3_AF10
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*/
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static void APP_SPIConfig(void)
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{
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LL_SPI_InitTypeDef SPI_InitStruct;
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LL_GPIO_InitTypeDef GPIO_InitStruct;
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LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_SPI1);
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// PA1 SCK
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GPIO_InitStruct.Pin = LL_GPIO_PIN_1;
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GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
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GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_HIGH;
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GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_0;
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LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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// PA7 MOSI
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GPIO_InitStruct.Pin = LL_GPIO_PIN_7;
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GPIO_InitStruct.Pull = LL_GPIO_PULL_NO;
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GPIO_InitStruct.Alternate = LL_GPIO_AF_0;
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LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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SPI_InitStruct.TransferDirection = LL_SPI_HALF_DUPLEX_TX;
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SPI_InitStruct.Mode = LL_SPI_MODE_MASTER;
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SPI_InitStruct.DataWidth = LL_SPI_DATAWIDTH_8BIT;
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SPI_InitStruct.ClockPolarity = LL_SPI_POLARITY_LOW;
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SPI_InitStruct.ClockPhase = LL_SPI_PHASE_1EDGE;
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SPI_InitStruct.NSS = LL_SPI_NSS_SOFT;
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SPI_InitStruct.BaudRate = LL_SPI_BAUDRATEPRESCALER_DIV16;
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SPI_InitStruct.BitOrder = LL_SPI_MSB_FIRST;
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LL_SPI_Init(SPI1, &SPI_InitStruct);
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LL_SPI_Enable(SPI1);
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}
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void APP_GPIO_WriteOutputPin(GPIO_TypeDef *GPIOx, uint32_t PinMask, uint8_t Val)
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{
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(Val == 0U)? WRITE_REG(GPIOx->BRR, PinMask) : WRITE_REG(GPIOx->BSRR, PinMask);
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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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