/**
 * @file spi.h
 * @author chenjun (chenjun@radareye.com.cn)
 * @brief 
 * @version 0.1
 * @date 2022-04-06
 * 
 * @copyright Copyright (c) 2022
 * 
 */
#ifndef __SPI_H__
#define __SPI_H__

#include "n32g45x.h"

#ifndef NULL
#define NULL ((void*)0)
#endif

#define SPI_2                SPI2
#define SPI_2_CLK            RCC_APB1_PERIPH_SPI2
#define SPI_2_GPIO           GPIOB
#define SPI_2_GPIO_CLK       RCC_APB2_PERIPH_GPIOB
#define SPI_2_PIN_NSS        GPIO_PIN_12
#define SPI_2_PIN_SCK        GPIO_PIN_13
#define SPI_2_PIN_MISO       GPIO_PIN_14
#define SPI_2_PIN_MOSI       GPIO_PIN_15
#define SPI_2_DMA            DMA1
#define SPI_2_DMA_CLK        RCC_AHB_PERIPH_DMA1
#define SPI_2_Rx_DMA_Channel DMA1_CH4
#define SPI_2_Rx_DMA_FLAG    DMA1_FLAG_TC4
#define SPI_2_Tx_DMA_Channel DMA1_CH5
#define SPI_2_Tx_DMA_FLAG    DMA1_FLAG_TC5

#define SPI_MASTER_DR_Base 0x4001300C
#define SPI_SLAVE_DR_Base  0x4000380C




/**
 * @brief Chip Select pin low
 */
#define SPI_2_CS_LOW() GPIO_ResetBits(SPI_2_GPIO, SPI_2_PIN_NSS)
/**
 * @brief Chip Select pin high
 */
#define SPI_2_CS_HIGH() GPIO_SetBits(SPI_2_GPIO, SPI_2_PIN_NSS)

#define SPI_CS_LOW()   SPI_2_CS_LOW()
#define SPI_CS_HIGH()   SPI_2_CS_HIGH()

void spi_init(void);
void spi_write_read(SPI_Module *SPIx, uint8_t *ptdata, uint8_t *prdata, uint16_t len);





#endif /*__SPI_H__*/