| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869 |
- /* --------------------------- (C) COPYRIGHT 2021 Fortiortech ShenZhen -----------------------------
- File Name : SPI.c
- Author : Fortiortech Appliction Team
- Version : V1.0
- Date : 2021-04-11
- Description : This file contains .C file function used for Motor Control.
- ----------------------------------------------------------------------------------------------------
- All Rights Reserved
- ------------------------------------------------------------------------------------------------- */
- #include <Customer_Debug.h>
- #include <Myproject.h>
- /*****************************************************************************
- * Function : SPI_Init
- * Description : SPI初始化
- * Input : void
- * Output : None
- * Return :
- * Others :
- * Record
- * 1.Date : 20190402
- * Author : Bruce HW&RD
- * Modification: Created function
- *****************************************************************************/
- void SPI_Init(void)
- {
- ClrBit(SPI_CR1, SPIEN); // 0,disable SPI;1 enable
- /* -------------------------------------------------------------------------------------------------
- SPI管脚配置
- 1、禁止UART复用，P06配置为MISO，P05配置为MOSI
- 2、禁止比较器输出复用，P07配置为SCLK
- -------------------------------------------------------------------------------------------------*/
- ClrBit(PH_SEL, UART1EN); // 0,P06 as GPIO or SPI_MISO,P05 as GPIO or SPI_MOSI;1,P06 and p07 as USART
- /* -------------------------------------------------------------------------------------------------
- SPI时钟相位/极性配置
- CPHA = 0, CPOL = 0:上升沿接收，下降沿发送，空闲电平为低
- CPHA = 0, CPOL = 1:上升沿发送，下降沿接收，空闲电平为高
- CPHA = 1, CPOL = 0:上升沿发送，下降沿接收，空闲电平为低
- CPHA = 1, CPOL = 1:上升沿接收，下降沿发送，空闲电平为高
- -------------------------------------------------------------------------------------------------*/
- SetReg(SPI_CR0, CPHA | CPOL, CPOL);
-
- // 三线模式，MCU的 SCLK NSS MOSI 接SPI小板的 SCLK NSS MOSI， SPI拨码开关：SW2 = 0;SW3 = 0;
- // 双线模式，MCU的 SCLK MOSI 接SPI小板的 SCLK MOSI， SPI拨码开关：SW2 = 1;SW2 = 0;
- // 单线模式，MCU的 SCLK 接SPI小板的 MOSI， SPI拨码开关：SW2 = 1;SW3 = 1;
-
- ClrBit(SPI_CR1,NSSMOD1);
- SetBit(SPI_CR1,NSSMOD0);
-
- // SetBit(PH_SEL1 , SPICT0); //单线制SPI功能转移(P05-->P00，P34)
- SetBit(PH_SEL2 , SPICT1); //单线制SPI功能转移(P05-->P34)
-
- SetBit(SPI_CR0, SPIMS); // 0:Slave, 1:Master
- /* -------------------------------------------------------------------------------------------------
- SPI中断配置
- SPIF：SPI字节传输完成中断标志，硬件置位，软件清零
- WCOL：SPI写冲突中断（发送缓冲器非空时写操作），硬件置位，软件清零
- MODF：SPI方式错误中断（多主方式NSS被拉低，MSTEN和SPIEN被清零）硬件置位，软件清零
- RXOVRN：SPI接收溢出中断（SPI接收缓冲器接收溢出），硬件置位，软件清零
- -------------------------------------------------------------------------------------------------*/
- SetReg(SPI_CR1, SPIIF | WCOL | MODF | RXOVRN, 0x00); // SPI所有中断清除
- SPIIE = 0; // SPI中断使能
- SPI_CLK = 0; // Fspi = Fcpu / (2*(SPI_CLK + 1)) = 6MHz
- SetBit(SPI_CR1, SPIEN); // enable SPI
- }
|
