本帖最后由 光輝歲月 于 2015-8-11 19:41 編輯
最近學(xué)習(xí)stm8，于是想把51的24L01的程序移植到stm8，我把引腳定義好，初始化io口，但是程序不好用，spi讀寫寄存器都不好用，這里請(qǐng)教大家;
#include "IOSTM8S103F3.h"
/************************I/O口定義********************************/
#define LED PB_ODR_ODR5
#define CSN PB_ODR_ODR4
#define SCK PC_ODR_ODR3
#define MOSI PC_ODR_ODR4
#define MISO PC_IDR_IDR5
#define IRQ PC_IDR_IDR6
#define CE PC_ODR_ODR7
//#define uchar unsigned char
//#define uint unsigned char
//*********************************************NRF24L01*************************************
#define TX_ADR_WIDTH 5 // 5 uints TX address width
#define RX_ADR_WIDTH 5 // 5 uints RX address width
#define TX_PLOAD_WIDTH 20 // 20 uints TX payload
#define RX_PLOAD_WIDTH 20 // 20 uints TX payload
//***************************************NRF24L01寄存器指令*******************************************************
#define READ_REG 0x00 // 讀寄存器指令
#define WRITE_REG 0x20 // 寫寄存器指令
#define RD_RX_PLOAD 0x61 // 讀取接收數(shù)據(jù)指令
#define WR_TX_PLOAD 0xA0 // 寫待發(fā)數(shù)據(jù)指令
#define FLUSH_TX 0xE1 // 沖洗發(fā)送 FIFO指令
#define FLUSH_RX 0xE2 // 沖洗接收 FIFO指令
#define REUSE_TX_PL 0xE3 // 定義重復(fù)裝載數(shù)據(jù)指令
#define NOP 0xFF // 保留
//*************************************SPI(nRF24L01)寄存器地址****************************************************
#define CONFIG 0x00 // 配置收發(fā)狀態(tài)，CRC校驗(yàn)?zāi)Ｊ揭约笆瞻l(fā)狀態(tài)響應(yīng)方式
#define EN_AA 0x01 // 自動(dòng)應(yīng)答功能設(shè)置
#define EN_RXADDR 0x02 // 可用信道設(shè)置
#define SETUP_AW 0x03 // 收發(fā)地址寬度設(shè)置
#define SETUP_RETR 0x04 // 自動(dòng)重發(fā)功能設(shè)置
#define RF_CH 0x05 // 工作頻率設(shè)置
#define RF_SETUP 0x06 // 發(fā)射速率、功耗功能設(shè)置
#define STATUS 0x07 // 狀態(tài)寄存器
#define OBSERVE_TX 0x08 // 發(fā)送監(jiān)測(cè)功能
#define CD 0x09 // 地址檢測(cè)
#define RX_ADDR_P0 0x0A // 頻道0接收數(shù)據(jù)地址
#define RX_ADDR_P1 0x0B // 頻道1接收數(shù)據(jù)地址
#define RX_ADDR_P2 0x0C // 頻道2接收數(shù)據(jù)地址
#define RX_ADDR_P3 0x0D // 頻道3接收數(shù)據(jù)地址
#define RX_ADDR_P4 0x0E // 頻道4接收數(shù)據(jù)地址
#define RX_ADDR_P5 0x0F // 頻道5接收數(shù)據(jù)地址
#define TX_ADDR 0x10 // 發(fā)送地址寄存器
#define RX_PW_P0 0x11 // 接收頻道0接收數(shù)據(jù)長度
#define RX_PW_P1 0x12 // 接收頻道0接收數(shù)據(jù)長度
#define RX_PW_P2 0x13 // 接收頻道0接收數(shù)據(jù)長度
#define RX_PW_P3 0x14 // 接收頻道0接收數(shù)據(jù)長度
#define RX_PW_P4 0x15 // 接收頻道0接收數(shù)據(jù)長度
#define RX_PW_P5 0x16 // 接收頻道0接收數(shù)據(jù)長度
#define FIFO_STATUS 0x17 // FIFO棧入棧出狀態(tài)寄存器設(shè)置
//**************************************************************************************
void Delay(unsigned int x);
void InerDelay_us(unsigned char n);
void Init_NRF24L01(void);
unsigned char SPI_RW(unsigned char uuchar);
unsigned char SPI_Read(unsigned char reg);
void SetRX_Mode(void);
unsigned char SPI_RW_Reg(unsigned char reg, unsigned char value);
unsigned char SPI_Read_Buf(unsigned char reg, unsigned char *pBuf, unsigned char uchars);
unsigned char SPI_Write_Buf(unsigned char reg, unsigned char *pBuf, unsigned char uchars);
unsigned char NRF24L01_RxPacket(unsigned char* rx_buf);
unsigned char sta; //狀態(tài)標(biāo)志
//uint sta;
#define RX_DR (sta>>6)&0x01;
#define TX_DS (sta>>5)&0x01;
#define MAX_RT (sta>>4)&0x01;
//uchar const TX_ADDRESS[TX_ADR_WIDTH]= {0x10,0x10,0x10,0x10,0x10}; //發(fā)送出去的地址
unsigned char TX_ADDRESS[TX_ADR_WIDTH]= {0x10,0x10,0x10,0x10,0x10}; //發(fā)送出去的地址
/***************************延時(shí)函數(shù)********************************************************/
void InerDelay_us(unsigned char n)
{
for(;n>0;n--)
{
++n;
--n;
}
}
//*****************************************長延時(shí)*****************************************
void Delay(unsigned int x)
{
unsigned int i,j;
for(i=x; i>0; i--)
{
for(j=110; j>0; j--)
{
++j;
--j;
}
}
}
//函數(shù)：uchar SPI_Read(uchar reg)
//功能：NRF24L01的SPI時(shí)序
/********************************************************///********************************************/
unsigned char SPI_Read(unsigned char reg)
{
unsigned char reg_val;
CSN = 0; // CSN low, initialize SPI communication...
SPI_RW(reg); // Select register to read from..
reg_val = SPI_RW(0); // ..then read registervalue
CSN = 1; // CSN high, terminate SPI communication
return(reg_val); // return register value
}
//函數(shù)：uint SPI_RW(uint uchar)
//功能：NRF24L01的SPI寫時(shí)序
/****************************************************************************************************/
unsigned char SPI_RW(unsigned char uuchar)
{
unsigned char bit_ctr;
for(bit_ctr=0;bit_ctr<8;bit_ctr++) // output 8-bit
{
MOSI = (uuchar & 0x80)>>7; // output 'uchar', MSB to MOSI
uuchar = (uuchar << 1); // shift next bit into MSB..
SCK = 1; // Set SCK high..
uuchar |= MISO; // capture current MISO bit
SCK = 0; // ..then set SCK low again
}
return(uuchar); // return read uchar
}
/****************************************************************************************************/
//功能：NRF24L01讀寫寄存器函數(shù)
/****************************************************************************************************/
unsigned char SPI_RW_Reg(unsigned char reg, unsigned char value)
{
unsigned char status;
CSN = 0; // CSN low, init SPI transaction
status = SPI_RW(reg); // select register
SPI_RW(value); // ..and write value to it..
CSN = 1; // CSN high again
return(status); // return nRF24L01 status uchar
}
//函數(shù)：uint SPI_Write_Buf(uchar reg, uchar *pBuf, uchar uchars)
//功能: 用于寫數(shù)據(jù)：為寄存器地址，pBuf：為待寫入數(shù)據(jù)地址，uchars：寫入數(shù)據(jù)的個(gè)數(shù)
/*********************************************************************************************************/
unsigned char SPI_Write_Buf(unsigned char reg, unsigned char *pBuf, unsigned char uchars)
{
unsigned char status,uchar_ctr;
CSN = 0; //SPI使能
status = SPI_RW(reg);
for(uchar_ctr=0; uchar_ctr<uchars; uchar_ctr++) //
{
SPI_RW(*pBuf++);
}
CSN = 1; //關(guān)閉SPI
return(status); //
}
//函數(shù)：void nRF24L01_TxPacket(unsigned char * tx_buf)
//功能：發(fā)送 tx_buf中數(shù)據(jù)
/*************************************************************************************/
void nRF24L01_TxPacket(unsigned char *tx_buf)
{
CE = 0; //StandBy I模式
SPI_Write_Buf(WR_TX_PLOAD, tx_buf, TX_PLOAD_WIDTH); // 裝載數(shù)據(jù)
SPI_RW_Reg(WRITE_REG + CONFIG, 0x0e); // IRQ收發(fā)完成中斷響應(yīng)，16位CRC，主發(fā)送
CE = 1; //置高CE，激發(fā)數(shù)據(jù)發(fā)送
Delay(100);
}
//*************************初始化24L01****************************************************/
void Init_NRF24L01(void)
{
InerDelay_us(100);
CE=0;
CSN=1;
SCK=0;
//IRQ=1;
SPI_Write_Buf(WRITE_REG + TX_ADDR, TX_ADDRESS, TX_ADR_WIDTH); // 寫發(fā)送端地址
SPI_Write_Buf(WRITE_REG + RX_ADDR_P0, TX_ADDRESS, RX_ADR_WIDTH); // 寫自動(dòng)應(yīng)答頻道0地址
SPI_RW_Reg(WRITE_REG + EN_AA, 0x00); // 頻道0自動(dòng) ACK應(yīng)答禁止 1
SPI_RW_Reg(WRITE_REG + EN_RXADDR, 0x00); // 頻道0接收禁止 2
SPI_RW_Reg(WRITE_REG + SETUP_RETR, 0x00); //禁止自動(dòng)重發(fā) 3 調(diào)試時(shí)注意這三點(diǎn)
SPI_RW_Reg(WRITE_REG + RF_CH, 0); // 設(shè)置信道工作為2.4GHZ，收發(fā)必須一致
SPI_RW_Reg(WRITE_REG + RX_PW_P0, RX_PLOAD_WIDTH); //設(shè)置接收數(shù)據(jù)長度，本次設(shè)置為32字節(jié)
SPI_RW_Reg(WRITE_REG + RF_SETUP, 0x07); //設(shè)置發(fā)射速率為2MHZ，發(fā)射功率為最大值0dB
}
/*****************初始I/O口****************************************/
void Init_GPIO(void)
{
//#define LED PB_ODR_ODR5
//#define CSN PB_ODR_ODR4
//#define SCK PC_ODR_ODR3
//#define MOSI PC_ODR_ODR4
//#define MISO PC_IDR_IDR5
//#define IRQ PC_IDR_IDR6
//#define CE PC_ODR_ODR7
PB_DDR_DDR5 = 1;
PB_DDR_DDR4 = 1;
PB_CR1 = 0xff;
PB_CR2 = 0x00;
PC_DDR_DDR3 = 1;
PC_DDR_DDR4 = 1;
PC_DDR_DDR5 = 0;
PC_DDR_DDR6 = 0;
PC_DDR_DDR7 = 1;
PC_CR1 = 0xff;
PC_CR2 = 0x00;
}
/*****************************初始化時(shí)鐘***************************/
/*void Init_Cloc(void)
{
CLK_ICKR|=0x01; //開啟內(nèi)部HSI
while(!(CLK_ICKR&0x02));//HSI準(zhǔn)備就緒
CLK_SWR=0xe1; //HSI為主時(shí)鐘源
CLK_CKDIVR=0x18; //HSI 8 分頻 2M
}*/
int main( void )
{
//Init_Cloc();
Init_GPIO();
LED = 1;
unsigned char TxBuf[20]={0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x10,
0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x20};
/*if(MISO == 1)
while(1)
{
LED = 0;
Delay(1000);
LED = 1; Delay(1000);
}*/
Init_NRF24L01();
//nRF24L01_TxPacket(TxBuf);
while(1)
{
//nRF24L01_TxPacket(TxBuf);
sta = SPI_Read(STATUS);
if(sta == 0x2e) //查看是否發(fā)送成功
{
LED = 0;
Delay(60000);
LED = 1;
Delay(60000);
}
//SPI_RW_Reg(WRITE_REG+STATUS,0XFF); //清狀態(tài)寄存器
//Delay(1000); //延時(shí)
}
}
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