LDC1000的STM32驱动源程序

2018-7-6 02:53:56 2022 LDC1000 STM32

/*----------------------------------------
LDC1000-STM32驱动程序
作者: BoX
时间: 8月6日
版本: V1.0
----------------------------------------*/
#include "stm32f10x.h"
#include "usart1.h"
#include "led.h"
#include "delay.h"
#include "stdio.h"
#include "ldc1000.h"
#include "pwm.h"
/*----------------------------------------
全局变量
----------------------------------------*/
extern uint8_t RegArray[REG_LEN];
int8_t i = 0;
/*----------------------------------------
主函数
----------------------------------------*/
int main(void)
{
DelayInit();
LED_GPIO_Config();
USART1_Config();
PWM_tiM4_CH1_Config(8,0); //输出8MHz时钟给TBCLK,LDC1000需要8MHz时钟方可运行
delayms(100);
LDC1000_Init();
//printf("LDC1000-DEMOrn");
while(1)
{ //LDC1000_WriteReg(LDC1000_CMD_SENSORFREQ, 0x94);
//delayms(10);
printf("0x00 = %xrn",LDC1000_ReadReg(0x00));
printf("0x01 = %xrn",LDC1000_ReadReg(0x01));
printf("0x02 = %xrn",LDC1000_ReadReg(0x02));
printf("0x03 = %xrn",LDC1000_ReadReg(0x03));
printf("0x04 = %xrn",LDC1000_ReadReg(0x04));
printf("0x05 = %xrn",LDC1000_ReadReg(0x05));
printf("0x06 = %xrn",LDC1000_ReadReg(0x06));
printf("0x07 = %xrn",LDC1000_ReadReg(0x07));
printf("0x08 = %xrn",LDC1000_ReadReg(0x08));
printf("0x09 = %xrn",LDC1000_ReadReg(0x09));
printf("0x0A = %xrn",LDC1000_ReadReg(0x0A));
printf("0x0B = %xrn",LDC1000_ReadReg(0x0B));
printf("0x20 = %xrn",LDC1000_ReadReg(0x20));
printf("0x21 = %xrn",LDC1000_ReadReg(0x21));
printf("0x22 = %xrn",LDC1000_ReadReg(0x22));
printf("0x23 = %xrn",LDC1000_ReadReg(0x23));
printf("0x24 = %xrn",LDC1000_ReadReg(0x24));
printf("0x25 = %xrn",LDC1000_ReadReg(0x25));
// LDC1000_ReadBytes(LDC1000_CMD_REVID,&RegArray[0],12);
// for(i=0; i<12; i++)
// {
// printf("Addr=%x Data=%xrn",i,RegArray);
// }
delayms(1000);
}
}

LDC1000.c

单片机源程序如下:

#include "ldc1000.h"
/*----------------------------------------
                              全局变量
----------------------------------------*/
uint8_t RegArray[REG_LEN];
/*----------------------------------------
                              宏定义
----------------------------------------*/
#define CSB_0       GPIOB->BRR  = GPIO_Pin_7
#define CSB_1       GPIOB->BSRR = GPIO_Pin_7
/*----------------------------------------
函数功能: LDC1000初始化
函数参数: 无
----------------------------------------*/
void LDC1000_Init(void)
{
      LDC1000_GPIO_Init();
      LDC1000_SPI_Init();
LDC1000_WriteReg(LDC1000_CMD_RPMAX,    0x13);
LDC1000_WriteReg(LDC1000_CMD_RPMIN,    0x3A);
      LDC1000_WriteReg(LDC1000_CMD_SENSORFREQ,  0x94);
      LDC1000_WriteReg(LDC1000_CMD_LDCCONFIG, 0x17);
      LDC1000_WriteReg(LDC1000_CMD_CLKCONFIG, 0x02);
      LDC1000_WriteReg(LDC1000_CMD_INTCONFIG, 0x02);
      LDC1000_WriteReg(LDC1000_CMD_THRESHILSB,  0x50);
      LDC1000_WriteReg(LDC1000_CMD_THRESHIMSB,  0x14);
      LDC1000_WriteReg(LDC1000_CMD_THRESLOLSB,  0xC0);
      LDC1000_WriteReg(LDC1000_CMD_THRESLOMSB,  0x12);
      LDC1000_WriteReg(LDC1000_CMD_PWRCONFIG, 0x01);
}
/*----------------------------------------
函数功能: LDC1000 GPIO初始化
函数参数: IO口连接图
      +5V       <->       +5V
      DCLK       <->       PB6 <-> TIM4_CH1
      SCLK <->       PA5 <-> SPI1_SCK
      SDI    <->       PA7 <-> SPI1_MOSI
      SDO    <->       PA6 <-> SPI1_MISO
      VIO             <->       3V3
      GND             <->       GND
      INT    <->       PC2 <-> GPIO
      CSB             <->       PB7       <-> GPIO
      GND             <->             GND
----------------------------------------*/
void LDC1000_GPIO_Init(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);       //记住使能AFIO时钟
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB| RCC_APB2Periph_GPIOC , ENABLE);
      //PB6->PWM_OUTPUT
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;             //PB6复用推挽输出
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOB, &GPIO_InitStructure);
      //A5->SCK  A6->MISO A7->MOSI
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6 | GPIO_Pin_7;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;          //SPI用复用推挽输出
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOA,&GPIO_InitStructure);
      //PC2->INT
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOC,&GPIO_InitStructure);
      //PB7->CSB
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOB,&GPIO_InitStructure);
}
/*----------------------------------------
函数功能: SPI参数初始化
函数参数: LDC1000的时钟频率必须在4.2MHz
                  且不能超过5MHz,不能低于4MHz,否则
               模块不能够正常通信,所以SPI波特率
               分频系数选择16分频.
----------------------------------------*/
void LDC1000_SPI_Init(void)
{
      SPI_InitTypeDef SPI_InitStructure;
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1,ENABLE);             //使能APB2外设时钟
      SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
      SPI_InitStructure.SPI_Mode = SPI_Mode_Master;                      //SPI主
      SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;             //数据格式8位
      SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;                               //时钟极性低,高都可以
      SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;                   //时钟相位第1,2边沿触发都可以
      SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
      SPI_InitStructure.SPI_BaudRatePrescaler       = SPI_BaudRatePrescaler_16; //必须是16分频
      SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;             //MSB在前,必须
      SPI_InitStructure.SPI_CRCPolynomial = 7;                               //CRC多项式校验,可有可无
      SPI_Init(SPI1,&SPI_InitStructure);
      SPI_Cmd(SPI1,ENABLE);
}
/*----------------------------------------
函数功能: LDC1000写寄存器
函数参数: - addr 寄存器地址
                  - dat  数据
----------------------------------------*/
void LDC1000_WriteReg(int8_t addr, uint8_t dat)
{
      addr = addr & 0x7F;                   //MSB为0写寄存器,为1读寄存器
      CSB_0;
//       LDC1000_SendByte(addr);
//       LDC1000_SendByte(dat);
      SPI_I2S_SendData(SPI1, addr);
      while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
      SPI_I2S_SendData(SPI1, dat);
      while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
      CSB_1;
}
/*----------------------------------------
函数功能: LDC1000读寄存器
函数参数: - addr 寄存器地址
----------------------------------------*/
uint8_t LDC1000_ReadReg(int8_t addr)
{
      uint8_t temp;
      addr = addr | 0x80;                   //MSB为1读寄存器,为0写寄存器
      CSB_0;
      SPI_I2S_SendData(SPI1, addr);
      while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
      SPI_I2S_SendData(SPI1, 0x00);
      while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
      temp = (uint8_t)SPI_I2S_ReceiveData(SPI1);
//       LDC1000_SendByte(addr);
//       temp = LDC1000_SendByte(0x00);
      CSB_1;
      return temp;
}
/*----------------------------------------
函数功能: 向LDC1000发送一字节数据
函数参数: 要发送的数据dat
返回值: 器件发回来的数据
----------------------------------------*/
uint8_t LDC1000_SendByte(uint8_t dat)
{
      while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_TXE) == RESET);
      SPI_I2S_SendData(SPI1, dat);
      while(SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_RXNE) == RESET);
      return (uint8_t)SPI1->DR;
}
/*----------------------------------------
函数功能: 读取LDC1000一个字节
函数参数: 空
返回值: 从器件发来的一字节数据
----------------------------------------*/
uint8_t LDC1000_ReadByte(void)
{
      return 0x00;
}
/*----------------------------------------
函数功能: 读取LDC1000 len个字节
……………………
…………限于本文篇幅余下代码请从电子发烧友下载附件…………

所有资料51hei提供下载:
    LDC1000 - STM32.rar