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#include <bsp.h>
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#include <stm32f4xx_spi.h>
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#include <stm32f4xx_rcc.h>
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#include <stm32f4xx_gpio.h>
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#include <stdio.h>
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#define CODEC_I2C_GPIO_AF GPIO_AF_I2C1
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#define CODEC_I2C_GPIO GPIOB
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#define CODEC_I2C_SCL_PIN GPIO_Pin_6
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#define CODEC_I2C_SDA_PIN GPIO_Pin_9
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#define CODEC_I2S_SCL_PINSRC GPIO_PinSource6
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#define CODEC_I2S_SDA_PINSRC GPIO_PinSource9
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int main()
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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SPI_InitTypeDef SPI_InitStructure;
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bsp_init();
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2);
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GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);
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SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
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SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
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SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
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SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
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SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
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SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
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SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
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SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
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SPI_InitStructure.SPI_CRCPolynomial = 7;
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SPI_Init(SPI2, &SPI_InitStructure);
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SPI_Cmd(SPI2, ENABLE);
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while(1)
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{
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while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_TXE) == RESET);
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SPI_I2S_SendData(SPI2, 0x5a);
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}
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}
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