STM8软件模拟SPI与NRF24L01通信

_Bool MOSI_PIN @PC_ODR:6;
_Bool MISO_PIN @PC_IDR:7;
_Bool IRQ_PIN @PD_IDR:3; //为低表示:1已接收到数据,数据移完时自动变为高,2发送完变低，3从发送次数超过设定值
_Bool CSN_PIN @PA_ODR:3; //为低时激活SPI发送数据(芯片的片选线，CSN为低电平芯片工作)，此时可设置24L01
PA_CR2 = 0b00000000;
PA_ODR = 0b00001000;
PB_DDR = 0b00100000;
PB_CR1 = 0b11111111;
PB_CR2 = 0b00000000;
PB_ODR = 0b00100000;
PC_DDR = 0b01100000;
{
u16 j;
for(j=0;j<i;++j)
{ while(!f_250us)
{
IWDG_KR=0Xaa; //清除看门狗
}
f_250us=0;
}
}
////////////////////////////////////////////////
TIM2_CCR2H = 0X00; //决定PWM的占空比/utycycle control register: CCR是16BIT
//Configure CPU clock prescaler
CLK_CKDIVR |= 0x00; //CPUDIV[2:0]=000: fCPU=fMASTER/[1.2.4.8.16.32.64.128]
//决定指令速度,不影响定时器
}
//////////////////////////////////
#define FIFO_STATUS 0x17 // 'FIFO Status Register' register address
//nRF24L01 SPI Command constant 写命令时要CSN_PIN要为低
#define READ_REG 0x00 //read command to register
#define RX_ADDR_P4 0x0e // 'RX address pipe4' register address
#define RX_ADDR_P5 0x0f // 'RX address pipe5' register address
#define TX_ADDR 0x10 // 'TX address' register address
#define EN_RXADDR 0x02 // 'Enabled RXaddresses' register address
#define SETUP_AW 0x03 // 'Setup address width' register address
#define SETUP_RETR 0x04 // 'Setup Auto. Retrans' register address
#define WRITE_REG 0x20 //write command to register
#define R_RX_PAYLOAD 0x61 //RX payload register address
#define W_TX_PAYLOAD 0xa0 //TX payload register address
// COMPILER: STM8 Cosmic C Compiler
// DATE: 2010-9-12 16:41
//=========================================
#include "STM8S103F.h" //Registers and memory
#define OBSERVE_TX 0x08 // 'Observe TX' register address
#define CD 0x09 // 'Carrier Detect' register address
#define RX_ADDR_P0 0x0A // 'RX address pipe0' register address
#define u8 unsigned char
#define u16 unsigned int
#define u32 unsigned int
#define countof(a) (sizeof(a)/sizeof(*(a)))//带参数的定义
#define BufferSize (countof(Tx_Buffer)-1)//减掉一个空字符
void CLK_Init(void)
{
//Configure HSI prescaler
CLK_CKDIVR &= ~0x10; //HSIDIV[4:3]=00 [系统分频1.2.4.8],上电默认值8分频
//8mhz=16ห้องสมุดไป่ตู้hz/系统2分频
u8 TX_BUF[PAYLOAD_WIDTH]={0,1,2,3};
/////////////////////////////////////////////
//
/////////////////////////////////////////////
delay_time(u16 i)
PC_CR1 = 0B11111111;
PC_CR2 = 0b00000000;
PC_ODR = 0b00000000;
PD_DDR = 0b00010000;
PD_CR1 = 0b11111111;
PD_CR2 = 0b00000000; //
#define RX_ADDR_P1 0x0b // 'RXaddress pipe1' register address
#define RX_ADDR_P2 0x0c // 'RXaddress pipe2' register address
#define RX_ADDR_P3 0x0d // 'RX address pipe3' register address
PD_ODR = 0b00000000;
CE_PIN=0; // chip enable
CSN_PIN=1; // Spi disable
SCK_PIN =0;
}
//////////////////////////////////
//
//////////////////////////////////
#define RX_PW_P0 0x11 // 'RX payload width, pipe0' register address
#define RX_PW_P1 0x12 // 'RX payload width, pipe1' register address
#define RX_PW_P2 0x13 // 'RX payload width, pipe2' register address
TIM2_CCE_PINR1 |= 0x30; //CC polarity low,enable PWM output
TIM2_ARRH = 0x00; //自动从装载寄存器/定时初值,
TIM2_ARRL = 0xff; //先装高字节
//========================================
// PROJECT: 24L01发送实验(软件模拟SPI)
// AUTHOR: MENGJICHENG
// MODULE: main.c
//
//////////////////////////////////
void TIM_Init(void)
{
/* //TIM2 CC2 control LED Brightness
TIM2_CCMR2 |= 0x70; //Output mode PWM2.
u8 Tx_Buffer[] ="123456789";//"STM8Sxxx SPI Firmware Library Example: communication with a microSD card";
//-----------------------------------
_Bool f_250us=0;
#define FLUSH_TX 0xe1 //flush TX register command
#define FLUSH_RX 0xe2 //flush RX register command
#define REUSE_TX_PL 0xE3 //reuse TX payload register command
#define RX_PW_P3 0x14 // 'RX payload width, pipe3' register address
#define RX_PW_P4 0x15 // 'RX payload width, pipe4' register address
#define RX_PW_P5 0x16 // 'RX payload width, pipe5' register address