void TLC6983_Write_Reg(uint32_t dat,uint8_t data,uint8_t cmd)//0---写命令 1---读 { uint8_t i; if(cmd) gpio_bit_write(GPIOB, LAT, 0x01); else gpio_bit_write(GPIOB, LAT, 0x00); gpio_bit_write(GPIOB, CLK, 0x00); for(i=0;i<8;i++) { gpio_bit_write(GPIOB, CLK, 0x00); if(dat&0x8000) gpio_bit_write(GPIOB,DATA, 0x01); else gpio_bit_write(GPIOB,DATA, 0x00); gpio_bit_write(GPIOB, CLK, 0x01); dat<<=1; } gpio_bit_write(GPIOB, CLK, 0x01); gpio_bit_write(GPIOB, LAT, 0x01); gpio_bit_write(GPIOB, LAT, 0x00); TLC6983_SendByte((uint8_t)(data > 46)); TLC6983_SendByte((uint8_t)data); gpio_bit_write(GPIOB, LAT, 0x01); }
时间: 2023-07-16 08:12:27 浏览: 41
这段代码是用来控制TLC6983芯片进行数据的读写操作的。根据函数的参数不同,可以实现写命令或读取数据的功能。在函数中,先通过控制GPIO口的电平来模拟SPI通信协议,将数据从单片机发送给TLC6983芯片。同时,也会将读取到的数据发送回单片机。其中,DAT参数代表要写入的数据,data参数代表要读取的数据,cmd参数用于控制读写命令。具体实现过程可以参考函数内部的注释。
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STM32 TLC6983寄存器操作代码
以下是使用STM32控制TLC6983 LED驱动器的寄存器操作代码示例:
```C
#include "stm32f10x.h"
/* 定义TLC6983寄存器地址 */
#define TLC6983_CONTROL_REG_ADDR 0x00
#define TLC6983_PWM0_REG_ADDR 0x01
#define TLC6983_PWM1_REG_ADDR 0x02
#define TLC6983_PWM2_REG_ADDR 0x03
/* 定义TLC6983控制寄存器参数 */
#define TLC6983_CTRL_AUTO_INC 0x80
#define TLC6983_CTRL_PWM0_EN 0x40
#define TLC6983_CTRL_PWM1_EN 0x20
#define TLC6983_CTRL_PWM2_EN 0x10
#define TLC6983_CTRL_BRIGHTNESS(x) ((x) & 0x0F)
/* 初始化TLC6983 */
void TLC6983_Init(void)
{
/* 配置SPI接口 */
// ...
/* 配置GPIO */
// ...
/* 配置TLC6983控制寄存器 */
uint8_t ctrl_reg = TLC6983_CTRL_AUTO_INC | TLC6983_CTRL_PWM0_EN |
TLC6983_CTRL_PWM1_EN | TLC6983_CTRL_PWM2_EN |
TLC6983_CTRL_BRIGHTNESS(0x0F);
TLC6983_WriteReg(TLC6983_CONTROL_REG_ADDR, ctrl_reg);
/* 配置TLC6983 PWM寄存器 */
TLC6983_WriteReg(TLC6983_PWM0_REG_ADDR, 0x00);
TLC6983_WriteReg(TLC6983_PWM1_REG_ADDR, 0x00);
TLC6983_WriteReg(TLC6983_PWM2_REG_ADDR, 0x00);
}
/* 向TLC6983写入寄存器值 */
void TLC6983_WriteReg(uint8_t reg_addr, uint8_t reg_val)
{
/* 使能SPI片选信号 */
// ...
/* 发送写寄存器命令 */
uint8_t cmd = reg_addr << 1;
SPI_SendData(cmd);
/* 发送寄存器值 */
SPI_SendData(reg_val);
/* 等待SPI传输完成 */
while (SPI_GetFlagStatus(SPI_FLAG_BSY) == SET);
/* 禁用SPI片选信号 */
// ...
}
/* 设置TLC6983 PWM值 */
void TLC6983_SetPWM(uint8_t pwm0, uint8_t pwm1, uint8_t pwm2)
{
/* 配置TLC6983 PWM寄存器 */
TLC6983_WriteReg(TLC6983_PWM0_REG_ADDR, pwm0);
TLC6983_WriteReg(TLC6983_PWM1_REG_ADDR, pwm1);
TLC6983_WriteReg(TLC6983_PWM2_REG_ADDR, pwm2);
/* 更新PWM值 */
uint8_t ctrl_reg = TLC6983_ReadReg(TLC6983_CONTROL_REG_ADDR);
TLC6983_WriteReg(TLC6983_CONTROL_REG_ADDR, ctrl_reg);
}
/* 读取TLC6983寄存器值 */
uint8_t TLC6983_ReadReg(uint8_t reg_addr)
{
/* 使能SPI片选信号 */
// ...
/* 发送读寄存器命令 */
uint8_t cmd = (reg_addr << 1) | 0x01;
SPI_SendData(cmd);
/* 接收寄存器值 */
uint8_t reg_val = SPI_ReceiveData();
/* 等待SPI传输完成 */
while (SPI_GetFlagStatus(SPI_FLAG_BSY) == SET);
/* 禁用SPI片选信号 */
// ...
return reg_val;
}
```
以上代码中,`TLC6983_Init()`函数用于初始化TLC6983驱动器,包括配置SPI接口、GPIO和控制寄存器等。`TLC6983_WriteReg()`和`TLC6983_ReadReg()`函数用于向TLC6983写入和读取寄存器值。`TLC6983_SetPWM()`函数用于设置TLC6983的PWM值,并更新控制寄存器以使PWM值生效。
STM32 TLC6983寄存器例程
以下是一个基本的STM32 TLC6983寄存器例程,用于控制TLC6983 LED驱动芯片:
```c
#include "stm32f4xx.h"
// 定义TLC6983寄存器地址
#define TLC6983_CONTROL_REG1 0x00
#define TLC6983_CONTROL_REG2 0x01
#define TLC6983_CONTROL_REG3 0x02
#define TLC6983_PWM_REG_BASE 0x03
// 定义TLC6983寄存器位域
#define TLC6983_LED_ON 0x10
#define TLC6983_LED_OFF 0x00
#define TLC6983_PWM_MAX 0x3FF
// 定义TLC6983控制寄存器的值
#define TLC6983_CONTROL_REG1_VALUE 0x00
#define TLC6983_CONTROL_REG2_VALUE 0x00
#define TLC6983_CONTROL_REG3_VALUE 0x00
// 初始化函数
void TLC6983_Init(void)
{
// 初始化SPI接口
// ...
// 写入控制寄存器的值
SPI_Write(TLC6983_CONTROL_REG1, TLC6983_CONTROL_REG1_VALUE);
SPI_Write(TLC6983_CONTROL_REG2, TLC6983_CONTROL_REG2_VALUE);
SPI_Write(TLC6983_CONTROL_REG3, TLC6983_CONTROL_REG3_VALUE);
}
// 设置LED亮度
void TLC6983_SetLED(uint8_t led_num, uint16_t pwm_value)
{
// 计算PWM寄存器地址
uint8_t pwm_reg_addr = TLC6983_PWM_REG_BASE + (led_num * 2);
// 写入PWM值
SPI_Write(pwm_reg_addr, (pwm_value >> 8) & 0xFF);
SPI_Write(pwm_reg_addr + 1, pwm_value & 0xFF);
}
// 关闭所有LED
void TLC6983_TurnOffAllLEDs(void)
{
// 写入所有PWM寄存器为0
for (uint8_t i = 0; i < 16; i++)
{
TLC6983_SetLED(i, TLC6983_LED_OFF);
}
}
```
需要根据具体的硬件接口和SPI通信方式进行修改。