72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
#include "hdl_spi4.h"
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void hdl_spi4_init(void)
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{
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stc_spi_init_t stcSpiInit;
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stc_gpio_init_t stcGpioInit;
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LL_PERIPH_WE(LL_PERIPH_GPIO | LL_PERIPH_EFM | LL_PERIPH_FCG | LL_PERIPH_PWC_CLK_RMU | LL_PERIPH_SRAM);
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/* 配置SPI引脚 */
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(void)GPIO_StructInit(&stcGpioInit);
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stcGpioInit.u16PinDrv = PIN_HIGH_DRV;
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stcGpioInit.u16PinDrv = PIN_HIGH_DRV;
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(void)GPIO_Init(SPI4_SCLK_PORT, SPI4_SCLK_PIN, &stcGpioInit);
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(void)GPIO_Init(SPI4_MOSI_PORT, SPI4_MOSI_PIN, &stcGpioInit);
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(void)GPIO_Init(SPI4_MISO_PORT, SPI4_MISO_PIN, &stcGpioInit);
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GPIO_SetFunc(SPI4_SCLK_PORT, SPI4_SCLK_PIN, SPI4_SCLK_FUNC);
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GPIO_SetFunc(SPI4_MOSI_PORT, SPI4_MOSI_PIN, SPI4_MOSI_FUNC);
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GPIO_SetFunc(SPI4_MISO_PORT, SPI4_MISO_PIN, SPI4_MISO_FUNC);
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/* 配置SPI参数 */
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SPI_StructInit(&stcSpiInit);
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FCG_Fcg1PeriphClockCmd(SPI4_CLOCK, ENABLE);
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stcSpiInit.u32WireMode = SPI_3_WIRE; //3线SPI
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stcSpiInit.u32TransMode = SPI_FULL_DUPLEX; //全双工
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stcSpiInit.u32MasterSlave = SPI_MASTER; //主机
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stcSpiInit.u32ModeFaultDetect = SPI_MD_FAULT_DETECT_DISABLE; // 禁用模式故障检测
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stcSpiInit.u32Parity = SPI_PARITY_INVD; //无奇偶校验
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stcSpiInit.u32SpiMode = SPI_MD_3; //SPI模式3
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stcSpiInit.u32BaudRatePrescaler = SPI_BR_CLK_DIV64; //预分频
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stcSpiInit.u32DataBits = SPI_DATA_SIZE_8BIT; //数据宽度
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stcSpiInit.u32FirstBit = SPI_FIRST_MSB; //MSB高位有效
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(void)SPI_Init(SPI4_INSTANCE, &stcSpiInit);
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SPI_Cmd(SPI4_INSTANCE, ENABLE);
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LL_PERIPH_WP(LL_PERIPH_EFM | LL_PERIPH_FCG | LL_PERIPH_SRAM);
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}
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uint8_t hdl_spi4_txrx(uint8_t w_data)
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{
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uint8_t r_data = 0;
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uint16_t retry = 0;
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while (RESET == SPI_GetStatus(SPI4_INSTANCE, SPI_FLAG_TX_BUF_EMPTY))
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{
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retry++;
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if(retry > 200)
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{
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return 0;
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}
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}
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SPI_WriteData(SPI4_INSTANCE, (uint32_t)w_data);
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while (RESET == SPI_GetStatus(SPI4_INSTANCE, SPI_FLAG_RX_BUF_FULL))
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{
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retry++;
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if(retry > 200)
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{
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return 0;
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}
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}
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r_data = SPI_ReadData(SPI4_INSTANCE);
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return r_data;
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}
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