Init commit
This commit is contained in:
Jeremy Shen
@@ -0,0 +1,626 @@
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/*
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* SPI_Driv.c
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*
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* Created on: 2021年4月2日
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* Author: dell
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*/
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#include "SPI_Driv.h"
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extern XGpioPs psGpioInstancePtr; //端口
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extern XGpioPs_Config* GpioConfigPtr; //设备ID
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extern u32 K7_U0[16];
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extern u32 molex_4_bank_3[4];
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extern u32 cs_en_bank_3[4];
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/******************************************************************************
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* Function : void interface_initial(u32* device,u32 num_wire)
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* Description : interface initial
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* Parameter : device -- CPLD
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* num_wire -- 复位线编号
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* Return : void
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******************************************************************************/
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void interface_initial(u32* device) //wire_num = cs sck sdi/o
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{
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u32 sck = *(device+0);
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u32 cs = *(device+1);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 1);
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}
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/******************************************************************************
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* Function : void rst_CPLD(u32* device,u32 num_wire)
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* Description : CPLD reset
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* Parameter : device -- CPLD
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* num_wire -- 复位线编号
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* Return : void
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******************************************************************************/
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void rst_CPLD(u32* device,u32 num_wire) //wire_num = cs sck sdi/o
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{
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u32 rst_n = *(device+num_wire);
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XGpioPs_WritePin(&psGpioInstancePtr, rst_n, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, rst_n, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, rst_n, 0);
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usleep(2);
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XGpioPs_WritePin(&psGpioInstancePtr, rst_n, 1);
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}
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/******************************************************************************
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* Function : void spi_write_onewire(char addr, u32 data, char width, u32* device)
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* Description : spi onewire write
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* Parameter : addr -- 地址
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* data -- 数据
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* width -- 数据长度
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* device -- CPLD
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* Return : void
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******************************************************************************/
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void spi_write_onewire(u8 addr, u8 *data, u8 width, u32* device)
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{
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char temp_addr = 0;
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//u32 temp_data = 0;
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u32 temp_data = 0;
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char i = 0,j=0;
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u32 sck = *(device+0);
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u32 cs= *(device+1);
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u32 sdi= *(device+2);
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temp_addr = addr;
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///temp_data = data;
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
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//XGpioPs_WritePin(&psGpioInstancePtr, sdi, 1); // w/r标志位 1=w 0=r
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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for(i = 0; i < 8; i++) // 8bit地址
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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if(temp_addr&0x80)
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 1); //sck低电平传输数据 数据从中间变量到通信线上
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else
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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temp_addr = temp_addr<<1; //sck高电平准备数据,此处为准备第二个数据，第一个数据已经传输完毕
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}
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for(j=0;j<width;j++)
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{
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temp_data = *(data+j);
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for(i = 0; i < 8; i++) //nbit数据
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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if(temp_data&0x80) //注意数据位nbit，要从[n-1]取位
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 1);
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else
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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temp_data <<= 1;
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}
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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}
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs , 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0);
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}
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/******************************************************************************
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* Function : u32 spi_read_onewire(char addr, char width, u32* device)
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* Description : spi onewire read
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* Parameter : addr -- 地址
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* data -- 数据
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* width -- 数据长度
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* device -- CPLD
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* Return : void //??????
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******************************************************************************/
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u32 spi_read_onewire(char addr, char width, u32* device,char* read_data)
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{
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char temp_addr=0;
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u32 temp_data=0;
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char i=0,j=0;
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u32 sck = *(device+0);
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u32 cs= *(device+1);
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u32 sdi= *(device+2);
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u32 sdo= *(device+3);
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temp_addr = addr;
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
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//XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0); // w/r标志位 1=w 0=r
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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for(i = 0; i < 8; i++) // 8bit地址
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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if(temp_addr&0x80)
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 1); //sck低电平传输数据 数据从中间变量到通信线上
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else
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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temp_addr = temp_addr<<1; //sck高电平准备数据,此处为准备第二个数据，第一个数据已经传输完毕
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}
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for(j=0; j<width; j++)
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{
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for(i = 0; i < 8; i++) //nbit数据
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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temp_data = temp_data << 1; //sck低电平准备数据 准备好数位，此时的数据相当于从右边的FPGA移进MCU(先准备好中间变量)
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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if(XGpioPs_ReadPin(&psGpioInstancePtr,sdo)) //sck高电平接收数据 数据匹配到准备好的数位，等待一起传递到MCU
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temp_data = temp_data| 0x00000001;
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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}
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}
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0);
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read_data[0] = (u8)(temp_data>>16);
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read_data[1] = (u8)(temp_data>>8);
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read_data[0] = (u8)(temp_data);
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return temp_data;
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}
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/******************************************************************************
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* Function : u32 uspi_read_onewire(char addr, char width, u32* device)
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* Description : spi onewire read
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* Parameter : addr -- 地址
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* width -- 数据长度
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* device -- CPLD
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* Return : u32 reg_data
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******************************************************************************/
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u32 uspi_read_onewire(char addr, char width, u32* device)
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{
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char temp_addr=0;
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u32 temp_data=0;
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char i=0,j=0;
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u32 sck = *(device+0);
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u32 cs= *(device+1);
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u32 sdi= *(device+2);
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u32 sdo= *(device+3);
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temp_addr = addr;
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
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//XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0); // w/r标志位 1=w 0=r
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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//XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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for(i = 0; i < 8; i++) // 8bit地址
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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if(temp_addr&0x80)
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 1); //sck低电平传输数据 数据从中间变量到通信线上
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else
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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temp_addr = temp_addr<<1; //sck高电平准备数据,此处为准备第二个数据，第一个数据已经传输完毕
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}
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for(j=0; j<width; j++)
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{
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for(i = 0; i < 8; i++) //nbit数据
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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temp_data = temp_data << 1; //sck低电平准备数据 准备好数位，此时的数据相当于从右边的FPGA移进MCU(先准备好中间变量)
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
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if(XGpioPs_ReadPin(&psGpioInstancePtr,sdo)) //sck高电平接收数据 数据匹配到准备好的数位，等待一起传递到MCU
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temp_data = temp_data| 0x00000001;
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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}
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}
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, cs, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi, 0);
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return temp_data;
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}
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/******************************************************************************
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* Function : void fourwire_write(u8 txdata, u32 sdi0, u32 sdi1, u32 sdi2, u32 sdi3)
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* Description : forwire write to reg
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* Parameter : txdata--数据
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* sdi0,sdi1,sdi2,sdi3--IO
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* Return : void
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******************************************************************************/
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void fourwire_write(u8 txdata, u32 sdi0, u32 sdi1, u32 sdi2, u32 sdi3)
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{
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switch(txdata & 0x0F)
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{
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case 0x00:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x01:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x02:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x03:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x04:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x05:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x06:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x07:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 0);
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break;
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}
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case 0x08:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
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break;
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}
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case 0x09:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
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break;
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}
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case 0x0A:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
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break;
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}
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case 0x0B:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
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break;
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}
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case 0x0C:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
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break;
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}
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case 0x0D:
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{
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XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 0);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
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XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
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break;
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}
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case 0x0E:
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{
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
|
||||
break;
|
||||
}
|
||||
case 0x0F:
|
||||
{
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi0, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi1, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi2, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sdi3, 1);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
* Function : void spi_write_fourwire(char addr, u16 data, u32* device)
|
||||
* Description : spi fourwire write
|
||||
* Parameter : addr -- 地址
|
||||
* data -- 数据
|
||||
* width -- 数据长度
|
||||
* device -- CPLD
|
||||
* Return : void
|
||||
******************************************************************************/
|
||||
void spi_write_fourwire(char addr, u16 data, u32* device)
|
||||
{
|
||||
u8 temp_addr = 0;
|
||||
u16 temp_data = 0;
|
||||
u8 split_addr[2] = {0}; //将8bit地址拆分，分别给4线传输，
|
||||
u8 split_data[4] = {0}; //16bit数据拆成4个4bit
|
||||
u8 i;
|
||||
u32 sck = *(device+0);
|
||||
u32 cs = *(device+1);
|
||||
u32 sdi0 = *(device+2);
|
||||
u32 sdi1 = *(device+3);
|
||||
u32 sdi2 = *(device+4);
|
||||
u32 sdi3 = *(device+5);
|
||||
|
||||
temp_addr = addr;
|
||||
temp_data = data;
|
||||
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
|
||||
fourwire_write(0x01,sdi0,sdi1,sdi2,sdi3); // w/r标志位 1=w 0=r
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
|
||||
for(i = 0; i < 2;i++) // 8bit地址 四根线分两次传输
|
||||
{
|
||||
split_addr[i] = (temp_addr>>(4*(1-i)))&0x0F; //sck高电平准备数据 数据从MCU到中间变量上
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
|
||||
fourwire_write(split_addr[i],sdi0,sdi1,sdi2,sdi3); //sck低电平传输数据 数据从中间变量到通信线上
|
||||
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
}
|
||||
for(i = 0; i < 4;i++) //16bit数据 4根线分四次传输
|
||||
{
|
||||
split_data[i] = (temp_data>>(4*(3-i)))&0x0F;
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
|
||||
fourwire_write(split_data[i],sdi0,sdi1,sdi2,sdi3);
|
||||
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
}
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 1);
|
||||
fourwire_write(0x00,sdi0,sdi1,sdi2,sdi3);
|
||||
//usleep(20);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
* Function : u16 fourwire_read(u32 sdo0, u32 sdo1, u32 sdo2, u32 sdo3)
|
||||
* Description : forwire read from reg
|
||||
* Parameter : sdo0,sdo1,sdo2,sdo3--IO
|
||||
* Return : rxdata--数据
|
||||
******************************************************************************/
|
||||
u16 fourwire_read(u32 sdo0, u32 sdo1, u32 sdo2, u32 sdo3)
|
||||
{
|
||||
u32 GPIO_PIN[4];
|
||||
u16 rdata[4];
|
||||
u16 rxdata = 0;
|
||||
|
||||
GPIO_PIN[0] = sdo0;
|
||||
GPIO_PIN[1] = sdo1;
|
||||
GPIO_PIN[2] = sdo2;
|
||||
GPIO_PIN[3] = sdo3;
|
||||
|
||||
for(u8 i = 0; i < 4 ; i++)
|
||||
{
|
||||
rdata[i] = XGpioPs_ReadPin(&psGpioInstancePtr,GPIO_PIN[i]);
|
||||
//xil_printf("rdata[i] = %x\r\n",rdata[i]);
|
||||
rxdata = ((rdata[i])<<i) + rxdata ;
|
||||
}
|
||||
return rxdata;
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
* Function : void spi_read_fourwire(char addr, u16* rxdata, u32* device)
|
||||
* Description : spi fourwire read
|
||||
* Parameter : addr -- 地址
|
||||
* rxdata -- 数据
|
||||
* device -- CPLD
|
||||
* Return : void
|
||||
******************************************************************************/
|
||||
void spi_read_fourwire(char addr, u16* rxdata, u32* device) //接收数据使用指针传递，方便接收多个
|
||||
{
|
||||
u8 temp_addr = 0;
|
||||
u16 temp_data = 0;
|
||||
u8 split_addr[2] = {0}; //将8bit地址拆分，分别给4线传输，
|
||||
u16 split_data[4] = {0}; //16bit数据拆成4个4bit
|
||||
u8 i = 0;
|
||||
u32 sck = *(device+0);
|
||||
u32 cs = *(device+1);
|
||||
u32 sdio0 = *(device+2);
|
||||
u32 sdio1 = *(device+3);
|
||||
u32 sdio2 = *(device+4);
|
||||
u32 sdio3 = *(device+5);
|
||||
|
||||
temp_addr = addr;
|
||||
|
||||
split_addr[0] = (temp_addr >> 4)&0x0F;
|
||||
split_addr[1] = (temp_addr)&0x0F;
|
||||
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 0);
|
||||
fourwire_write(0x00,sdio0,sdio1,sdio2,sdio3); // w/r标志位 1=w 0=r
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
|
||||
for(i = 0; i < 2; i++) // 8bit地址 四根线分两次传输
|
||||
{
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
|
||||
fourwire_write(split_addr[i],sdio0,sdio1,sdio2,sdio3); //sck低电平传输数据 数据从中间变量到通信线上
|
||||
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
}
|
||||
|
||||
for(i = 0; i < 4; i++)
|
||||
{
|
||||
XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, *(device+2+i),0); //input
|
||||
}
|
||||
|
||||
for(i = 0; i < 4; i++) //16bit数据 4根线分四次接收
|
||||
{
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
|
||||
split_data[i] = fourwire_read(sdio0,sdio1,sdio2,sdio3); //sck低电平准备数据 数据从通信线到中间变量上
|
||||
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 1);
|
||||
|
||||
temp_data = temp_data<<4;
|
||||
temp_data = temp_data + split_data[i];
|
||||
//temp_data = (split_data[i]<<(4*(3-i))) + temp_data; //sck高电平接收数据 数据从中间变量到MCU上
|
||||
// xil_printf("split_data[i],temp_data = %x,%x\r\n",split_data[i],temp_data);
|
||||
|
||||
}
|
||||
|
||||
for(i = 0; i < 4; i++)
|
||||
{
|
||||
XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, *(device+2+i),1); //output
|
||||
}
|
||||
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, sck, 0);
|
||||
fourwire_write(0x00,sdio0,sdio1,sdio2,sdio3);
|
||||
*rxdata = temp_data;
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 1);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, cs, 1);//add 2 lines
|
||||
//usleep(20);
|
||||
}
|
||||
|
||||
/******************************************************************************
|
||||
* Function : void GPIO_dir_set(u32* device,char dir)
|
||||
* Description : change GPIO direction
|
||||
* Parameter : device -- CPLD
|
||||
* dir -- GPIO_OUT/GPIO_IN
|
||||
* Return : void
|
||||
******************************************************************************/
|
||||
void GPIO_dir_set_16(u32* device,char dir)
|
||||
{
|
||||
u32 sdio[16] = {0};
|
||||
u8 i;
|
||||
|
||||
for(i = 0; i < 16;i++)
|
||||
{
|
||||
sdio[i] = *(device+i);
|
||||
|
||||
//XGpioPs_SetDirectionPin(&psGpioInstancePtr, sdio[i],1);
|
||||
XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, sdio[i],dir);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
void GPIO_dir_set_cs_enable(u32* device,u8 dir)
|
||||
{
|
||||
u32 sdio[4] = {0};
|
||||
u8 i;
|
||||
u8 dir_temp = 0;
|
||||
|
||||
for(i = 0; i < 4;i++)
|
||||
{
|
||||
sdio[i] = *(device+i);
|
||||
dir_temp = (((dir >> (3-i))) & 0x01);
|
||||
XGpioPs_SetOutputEnablePin(&psGpioInstancePtr, sdio[i],dir_temp);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void rst(char *d)
|
||||
{
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, *d, 0);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, *d, 1);
|
||||
usleep(20);
|
||||
XGpioPs_WritePin(&psGpioInstancePtr, *d, 0);
|
||||
}
|
||||
|
||||
|
||||
void func_test(void)
|
||||
{
|
||||
|
||||
XGpioPs_Write(&psGpioInstancePtr, 0x03, 0x12345678);
|
||||
}
|
||||
Reference in New Issue
Block a user