371 lines
10 KiB
C
371 lines
10 KiB
C
/********************************** (C) COPYRIGHT *******************************
|
||
* File Name : CH59x_SPI0.c
|
||
* Author : WCH
|
||
* Version : V1.2
|
||
* Date : 2021/11/17
|
||
* Description
|
||
*********************************************************************************
|
||
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
|
||
* Attention: This software (modified or not) and binary are used for
|
||
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
|
||
*******************************************************************************/
|
||
|
||
#include "CH59x_common.h"
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_MasterDefInit
|
||
*
|
||
* @brief 主机模式默认初始化：模式0+3线全双工+8MHz
|
||
*
|
||
* @param none
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_MasterDefInit(void)
|
||
{
|
||
R8_SPI0_CLOCK_DIV = 4; // 主频时钟4分频
|
||
R8_SPI0_CTRL_MOD = RB_SPI_ALL_CLEAR;
|
||
R8_SPI0_CTRL_MOD = RB_SPI_MOSI_OE | RB_SPI_SCK_OE;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_AUTO_IF; // 访问BUFFER/FIFO自动清除IF_BYTE_END标志
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_DMA_ENABLE; // 不启动DMA方式
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_CLKCfg
|
||
*
|
||
* @brief SPI0 基准时钟配置，= d*Tsys
|
||
*
|
||
* @param c - 时钟分频系数
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_CLKCfg(uint8_t c)
|
||
{
|
||
if(c == 2)
|
||
{
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_MST_DLY_EN;
|
||
}
|
||
else
|
||
{
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_MST_DLY_EN;
|
||
}
|
||
R8_SPI0_CLOCK_DIV = c;
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_DataMode
|
||
*
|
||
* @brief 设置数据流模式
|
||
*
|
||
* @param m - 数据流模式 refer to ModeBitOrderTypeDef
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_DataMode(ModeBitOrderTypeDef m)
|
||
{
|
||
switch(m)
|
||
{
|
||
case Mode0_LowBitINFront:
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_MST_SCK_MOD;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_BIT_ORDER;
|
||
break;
|
||
case Mode0_HighBitINFront:
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_MST_SCK_MOD;
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_BIT_ORDER;
|
||
break;
|
||
case Mode3_LowBitINFront:
|
||
R8_SPI0_CTRL_MOD |= RB_SPI_MST_SCK_MOD;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_BIT_ORDER;
|
||
break;
|
||
case Mode3_HighBitINFront:
|
||
R8_SPI0_CTRL_MOD |= RB_SPI_MST_SCK_MOD;
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_BIT_ORDER;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_MasterSendByte
|
||
*
|
||
* @brief 发送单字节 (buffer)
|
||
*
|
||
* @param d - 发送字节
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_MasterSendByte(uint8_t d)
|
||
{
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_FIFO_DIR;
|
||
R8_SPI0_BUFFER = d;
|
||
while(!(R8_SPI0_INT_FLAG & RB_SPI_FREE));
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_MasterRecvByte
|
||
*
|
||
* @brief 接收单字节 (buffer)
|
||
*
|
||
* @param none
|
||
*
|
||
* @return 接收到的字节
|
||
*/
|
||
uint8_t SPI0_MasterRecvByte(void)
|
||
{
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_FIFO_DIR;
|
||
R8_SPI0_BUFFER = 0xFF; // 启动传输
|
||
while(!(R8_SPI0_INT_FLAG & RB_SPI_FREE));
|
||
return (R8_SPI0_BUFFER);
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_MasterTrans
|
||
*
|
||
* @brief 使用FIFO连续发送多字节
|
||
*
|
||
* @param pbuf - 待发送的数据内容首地址
|
||
* @param len - 请求发送的数据长度，最大4095
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_MasterTrans(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
uint16_t sendlen;
|
||
|
||
sendlen = len;
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_FIFO_DIR; // 设置数据方向为输出
|
||
R16_SPI0_TOTAL_CNT = sendlen; // 设置要发送的数据长度
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END;
|
||
while(sendlen)
|
||
{
|
||
if(R8_SPI0_FIFO_COUNT < SPI_FIFO_SIZE)
|
||
{
|
||
R8_SPI0_FIFO = *pbuf;
|
||
pbuf++;
|
||
sendlen--;
|
||
}
|
||
}
|
||
while(R8_SPI0_FIFO_COUNT != 0); // 等待FIFO中的数据全部发送完成
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_MasterRecv
|
||
*
|
||
* @brief 使用FIFO连续接收多字节
|
||
*
|
||
* @param pbuf - 待接收的数据首地址
|
||
* @param len - 待接收的数据长度，最大4095
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_MasterRecv(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
uint16_t readlen;
|
||
|
||
readlen = len;
|
||
R8_SPI0_CTRL_MOD |= RB_SPI_FIFO_DIR; // 设置数据方向为输入
|
||
R16_SPI0_TOTAL_CNT = len; // 设置需要接收的数据长度，FIFO方向为输入长度不为0则会启动传输 */
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END;
|
||
while(readlen)
|
||
{
|
||
if(R8_SPI0_FIFO_COUNT)
|
||
{
|
||
*pbuf = R8_SPI0_FIFO;
|
||
pbuf++;
|
||
readlen--;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_MasterDMATrans
|
||
*
|
||
* @brief DMA方式连续发送数据
|
||
*
|
||
* @param pbuf - 待发送数据起始地址,需要四字节对其
|
||
* @param len - 待发送数据长度
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_MasterDMATrans(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_FIFO_DIR;
|
||
R16_SPI0_DMA_BEG = (uint32_t)pbuf;
|
||
R16_SPI0_DMA_END = (uint32_t)(pbuf + len);
|
||
R16_SPI0_TOTAL_CNT = len;
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END | RB_SPI_IF_DMA_END;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_DMA_ENABLE;
|
||
while(!(R8_SPI0_INT_FLAG & RB_SPI_IF_CNT_END));
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_DMA_ENABLE;
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_MasterDMARecv
|
||
*
|
||
* @brief DMA方式连续接收数据
|
||
*
|
||
* @param pbuf - 待接收数据存放起始地址,需要四字节对其
|
||
* @param len - 待接收数据长度
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_MasterDMARecv(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
R8_SPI0_CTRL_MOD |= RB_SPI_FIFO_DIR;
|
||
R16_SPI0_DMA_BEG = (uint32_t)pbuf;
|
||
R16_SPI0_DMA_END = (uint32_t)(pbuf + len);
|
||
R16_SPI0_TOTAL_CNT = len;
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END | RB_SPI_IF_DMA_END;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_DMA_ENABLE;
|
||
while(!(R8_SPI0_INT_FLAG & RB_SPI_IF_CNT_END));
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_DMA_ENABLE;
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_SlaveInit
|
||
*
|
||
* @brief 设备模式默认初始化，建议设置MISO的GPIO对应为输入模式
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_SlaveInit(void)
|
||
{
|
||
R8_SPI0_CTRL_MOD = RB_SPI_ALL_CLEAR;
|
||
R8_SPI0_CTRL_MOD = RB_SPI_MISO_OE | RB_SPI_MODE_SLAVE;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_AUTO_IF;
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_SlaveRecvByte
|
||
*
|
||
* @brief 从机模式，接收一字节数据
|
||
*
|
||
* @return 接收到数据
|
||
*/
|
||
uint8_t SPI0_SlaveRecvByte(void)
|
||
{
|
||
R8_SPI0_CTRL_MOD |= RB_SPI_FIFO_DIR;
|
||
while(R8_SPI0_FIFO_COUNT == 0);
|
||
return R8_SPI0_FIFO;
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_SlaveSendByte
|
||
*
|
||
* @brief 从机模式，发送一字节数据
|
||
*
|
||
* @param d - 待发送数据
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_SlaveSendByte(uint8_t d)
|
||
{
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_FIFO_DIR;
|
||
R8_SPI0_FIFO = d;
|
||
while(R8_SPI0_FIFO_COUNT != 0); // 等待发送完成
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_SlaveRecv
|
||
*
|
||
* @brief 从机模式，接收多字节数据
|
||
*
|
||
* @param pbuf - 接收收数据存放起始地址
|
||
* @param len - 请求接收数据长度
|
||
*
|
||
* @return none
|
||
*/
|
||
__HIGH_CODE
|
||
void SPI0_SlaveRecv(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
uint16_t revlen;
|
||
|
||
revlen = len;
|
||
R8_SPI0_CTRL_MOD |= RB_SPI_FIFO_DIR;
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END;
|
||
while(revlen)
|
||
{
|
||
if(R8_SPI0_FIFO_COUNT)
|
||
{
|
||
*pbuf = R8_SPI0_FIFO;
|
||
pbuf++;
|
||
revlen--;
|
||
}
|
||
}
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_SlaveTrans
|
||
*
|
||
* @brief 从机模式，发送多字节数据
|
||
*
|
||
* @param pbuf - 待发送的数据内容首地址
|
||
* @param len - 请求发送的数据长度，最大4095
|
||
*
|
||
* @return none
|
||
*/
|
||
__HIGH_CODE
|
||
void SPI0_SlaveTrans(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
uint16_t sendlen;
|
||
|
||
sendlen = len;
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_FIFO_DIR; // 设置数据方向为输出
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END;
|
||
while(sendlen)
|
||
{
|
||
if(R8_SPI0_FIFO_COUNT < SPI_FIFO_SIZE)
|
||
{
|
||
R8_SPI0_FIFO = *pbuf;
|
||
pbuf++;
|
||
sendlen--;
|
||
}
|
||
}
|
||
while(R8_SPI0_FIFO_COUNT != 0); // 等待FIFO中的数据全部发送完成
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_SlaveDMARecv
|
||
*
|
||
* @brief DMA方式连续接收数据
|
||
*
|
||
* @param pbuf - 待接收数据存放起始地址,需要四字节对其
|
||
* @param len - 待接收数据长度
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_SlaveDMARecv(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
R8_SPI0_CTRL_MOD |= RB_SPI_FIFO_DIR;
|
||
R16_SPI0_DMA_BEG = (uint32_t)pbuf;
|
||
R16_SPI0_DMA_END = (uint32_t)(pbuf + len);
|
||
R16_SPI0_TOTAL_CNT = len;
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END | RB_SPI_IF_DMA_END;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_DMA_ENABLE;
|
||
while(!(R8_SPI0_INT_FLAG & RB_SPI_IF_CNT_END));
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_DMA_ENABLE;
|
||
}
|
||
|
||
/*********************************************************************
|
||
* @fn SPI0_SlaveDMATrans
|
||
*
|
||
* @brief DMA方式连续发送数据
|
||
*
|
||
* @param pbuf - 待发送数据起始地址,需要四字节对其
|
||
* @param len - 待发送数据长度
|
||
*
|
||
* @return none
|
||
*/
|
||
void SPI0_SlaveDMATrans(uint8_t *pbuf, uint16_t len)
|
||
{
|
||
R8_SPI0_CTRL_MOD &= ~RB_SPI_FIFO_DIR;
|
||
R16_SPI0_DMA_BEG = (uint32_t)pbuf;
|
||
R16_SPI0_DMA_END = (uint32_t)(pbuf + len);
|
||
R16_SPI0_TOTAL_CNT = len;
|
||
R8_SPI0_INT_FLAG = RB_SPI_IF_CNT_END | RB_SPI_IF_DMA_END;
|
||
R8_SPI0_CTRL_CFG |= RB_SPI_DMA_ENABLE;
|
||
while(!(R8_SPI0_INT_FLAG & RB_SPI_IF_CNT_END));
|
||
R8_SPI0_CTRL_CFG &= ~RB_SPI_DMA_ENABLE;
|
||
}
|