# Conflicts:
#	EWARM/Project.ewp
This commit is contained in:
dufresneisme 2025-09-16 21:03:17 +08:00
commit 5238892c2f
11 changed files with 547 additions and 83 deletions

1
.gitignore vendored
View File

@ -1,4 +1,3 @@
*tmp*
EWARM/Debug/
EWARM/Release/
EWARM/settings/

View File

@ -12,6 +12,7 @@
"rtthread.h": "c",
"rthw.h": "c",
"delay_us.h": "c",
"core_cm4.h": "c"
"core_cm4.h": "c",
"gd32f4xx_usart.h": "c"
}
}

View File

@ -357,6 +357,7 @@
<state>$PROJ_DIR$\..\rtthread</state>
<state>$PROJ_DIR$\..\rtthread\include\libc</state>
<state>$PROJ_DIR$\..\rtthread\include</state>
<<<<<<< HEAD
<<<<<<< HEAD
<state>C:\Users\dufresne\Documents\020Study\500Project\git\newPtz\drivers</state>
=======
@ -364,6 +365,11 @@
<state>D:\git\newPtz\drivers\tmp75</state>
<state>D:\git\newPtz\drivers\mb85rc64</state>
>>>>>>> df00792cd493a7d5804a60e319aad67a31dc2ee1
=======
<state>D:\newPtz\drivers</state>
<state>D:\newPtz\drivers\mb85rc64</state>
<state>D:\newPtz\drivers\tmp75</state>
>>>>>>> fb0726f7e9cf0aac37964e0815ddc0905f163227
</option>
<option>
<name>CCStdIncCheck</name>
@ -2209,12 +2215,18 @@
<file>
<name>$PROJ_DIR$\..\drivers\mb85rc64\mb85rc64.c</name>
</file>
<file>
<name>$PROJ_DIR$\..\drivers\mb85rc64\mb85rc64.h</name>
</file>
</group>
<group>
<name>tmp75</name>
<file>
<name>$PROJ_DIR$\..\drivers\tmp75\tmp75.c</name>
</file>
<file>
<name>$PROJ_DIR$\..\drivers\tmp75\tmp75.h</name>
</file>
</group>
<file>
<name>$PROJ_DIR$\..\drivers\delay_us.c</name>

View File

@ -2876,12 +2876,18 @@
<file>
<name>$PROJ_DIR$\..\drivers\mb85rc64\mb85rc64.c</name>
</file>
<file>
<name>$PROJ_DIR$\..\drivers\mb85rc64\mb85rc64.h</name>
</file>
</group>
<group>
<name>tmp75</name>
<file>
<name>$PROJ_DIR$\..\drivers\tmp75\tmp75.c</name>
</file>
<file>
<name>$PROJ_DIR$\..\drivers\tmp75\tmp75.h</name>
</file>
</group>
<file>
<name>$PROJ_DIR$\..\drivers\delay_us.c</name>

View File

@ -38,6 +38,8 @@ OF SUCH DAMAGE.
#include "rtservice.h"
#include "drv_adc.h"
#include "mb85rc64.h"
#include "tmp75.h"
#include "drv_usart.h"
float voltage;
@ -47,6 +49,13 @@ float adc_value;
float tmp;
char tiedian_id[3]={0};
uint16_t tmp_value = 0;
extern uint16_t USER_ADC_DMA_DATA_BUFF;//bsp_adc.c中定义的ADC数据接收数组
uint8_t g_ADCDataReady=0;//DMA传输完成ADC数据标志位
typedef struct _MB85TEST_
{
char ttt;
@ -68,29 +77,61 @@ int main(void)
// RT-Thread 内核初始化等操作...
// 其他应用程序初始化代码...
adc_config();
gd32_usart_init();
adc_init();
temp75_gpio_init();
//测试mb铁电读写
memset(&ttest, 0, sizeof(ttest));
// mb85rc64_page_write();
mb85rc64_add_read(MB85TEST_ADD, (unsigned char *)&ttest, sizeof(ttest));
ttest.ttt += 3;
ttest.ggg /= 18;
if (ttest.ggg >= 1000)
{
ttest.ggg -= 2;
ttest.ggg /= 3;
}
else
{
ttest.ggg += 2;
ttest.ggg *= 3;
}
mb85rc64_page_write(MB85TEST_ADD, (unsigned char *)&ttest, sizeof(ttest));
// 进入主循环或启动其他任务
while (1)
{
voltage = ptz_Voltage_collect_adc1_task();
// current_origin = current*0.132 + 3.3/2;
if(SET == g_ADCDataReady)
{
g_ADCDataReady = RESET;
for(uint8_t i=0; i<CHANNEL_LENGTH; i++)
{
tmp_value = BSP_ADCDataAcquire(i);
if (i == 0)
{
voltage = tmp_value/ 4095.0 * 3.3;
}
else
{
current = tmp_value/ 4095.0 * 3.3;
}
}
}
rt_thread_mdelay(500);
current = ptz_Current_collect_adc1_task();
rt_thread_mdelay(500);
// voltage = ptz_Voltage_collect_adc1_task();
// rt_thread_mdelay(250);
// current = ptz_Current_collect_adc1_task();
// rt_thread_mdelay(250);
tmp = ptz_temperature_collect_tmp75_task();
@ -100,7 +141,25 @@ int main(void)
memset(&ttest, 0, sizeof(ttest));
// mb85rc64_page_write();
mb85rc64_add_read(MB85TEST_ADD, (unsigned char *)&ttest, sizeof(ttest));
// usart_puts(ttest.ttt);
// 主循环代码...
}
}
/*
*****************************************************************************
* : DMA_ADCIRQHandlerCallback
* : DMA_ADC中断服务回调函数
* :
* :
*****************************************************************************
*/
void DMA_ADCIRQHandlerCallback(void)
{
if(SET == dma_interrupt_flag_get(DMA1,USER_DMA_ADC_CHANNEL,DMA_INTC_FTFIFC))
{
dma_interrupt_flag_clear(DMA1,USER_DMA_ADC_CHANNEL,DMA_INTC_FTFIFC);
dma_channel_disable(DMA1, USER_DMA_ADC_CHANNEL);
g_ADCDataReady = SET;
}
}

View File

@ -1,6 +1,6 @@
/************************************************************
Copyright (C), 2025, cerlink Tech. Co., Ltd.
FileName: test.cpp
FileName: drv_adc.c
Author: dufresne Version : 1.0 Date:2025.09.15
Description: // 模块描述
Version: // 版本信息
@ -12,75 +12,130 @@
***********************************************************/
#include "drv_adc.h"
#include "tmp75.h"
#include "stdlib.h"
#include "string.h"
#include "gd32f4xx.h"
#include "gd32f4xx_adc.h"
#include "gd32f4xx_dma.h"
#include "rtthread.h"
/*全局声明区*/
uint16_t USER_ADC_DMA_DATA_BUFF[16] = {0};
void adc_config(void)
void adc_init(void)
{
/* 启用GPIOA时钟 */
rcu_periph_clock_enable(RCU_GPIOC);
/* 启用ADC0时钟 */
adc_rcu_config();
adc_gpio_config();
adc_dma_config();
adc_config();
}
/* 时钟+GPIO */
void adc_rcu_config(void)
{
/* 启用ADC1时钟 */
rcu_periph_clock_enable(RCU_ADC1);
/* peripheral clock enable */
rcu_periph_clock_enable(RCU_DMA1);//ADC只能用DMA1
// 复位ADC配置可选但建议初始化时做一次
adc_deinit();
// adc_clock_config(ADC_ADCCK_PCLK2_DIV4);
// 开启ADC
adc_enable(ADCX);
// 等待ADC稳定
rt_thread_mdelay(100);
// 执行ADC自校准
adc_calibration_enable(ADCX);
/* 启用GPIOC时钟 */
rcu_periph_clock_enable(RCU_GPIOC);
adc_clock_config(ADC_ADCCK_PCLK2_DIV4);
}
void adc_gpio_config(void)
{
/* 配置ADC引脚为模拟输入模式 */
gpio_mode_set(ADC_GPIO_PORT, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, VOLTAGE_ADC_PIN);
gpio_mode_set(ADC_GPIO_PORT, GPIO_MODE_ANALOG, GPIO_PUPD_NONE, CURRENT_ADC_PIN);
// 配置数据对齐方式为右对齐
adc_data_alignment_config(ADCX, ADC_DATAALIGN_RIGHT);
// 配置ADC分辨率12位
adc_resolution_config(ADCX, ADC_RESOLUTION_12B);
// 打开扫描模式
adc_special_function_config(ADCX, ADC_SCAN_MODE, ENABLE);
// 禁止连续模式 -> 单次转换模式
adc_special_function_config(ADCX, ADC_CONTINUOUS_MODE, DISABLE);
/* ########## 设置转换通道序列 ########## */
// 配置规则序列的长度1个通道
adc_channel_length_config(ADCX, ADC_ROUTINE_CHANNEL, ADC_CHANNEL_NUM);
}
/* DMA配置 */
static void adc_dma_config(void)
{
/* ADC_DMA_channel configuration */
dma_single_data_parameter_struct dma_single_data_parameter; //这里使用单数据模式,每次只传输一个数据单元,因为总数据量不大,且数据个数不固定
/* ADC DMA_channel configuration */
dma_deinit(DMA1, USER_DMA_ADC_CHANNEL);
/* initialize DMA single data mode */
dma_single_data_parameter.periph_addr = (uint32_t)(&ADC_RDATA(ADCX));//配置外设数据源地址宏决定ADCx
dma_single_data_parameter.periph_inc = DMA_PERIPH_INCREASE_DISABLE;//关闭外设增量,只需要每次对该数据源寄存器访问
dma_single_data_parameter.memory0_addr = (uint32_t)USER_ADC_DMA_DATA_BUFF;//先写死然后外部用的话需要extern
dma_single_data_parameter.memory_inc = DMA_MEMORY_INCREASE_ENABLE;//开启内存增量以存放不同通道的ADC数据
dma_single_data_parameter.periph_memory_width = DMA_PERIPH_WIDTH_16BIT;//ADC数据为16位的寄存器数据目的地为16位
dma_single_data_parameter.circular_mode = DMA_CIRCULAR_MODE_ENABLE;//循环模式由ADC通知DMA进行
/* DMA外设到内存模式不开启 */
dma_single_data_parameter.direction = DMA_PERIPH_TO_MEMORY;//ADC外设到RAM全局变量
dma_single_data_parameter.number = CHANNEL_LENGTH;//宏决定传输个数
dma_single_data_parameter.priority = DMA_PRIORITY_ULTRA_HIGH;//优先级设为超高,可改用宏
dma_single_data_mode_init(DMA1, USER_DMA_ADC_CHANNEL, &dma_single_data_parameter);
/* 配置 dma 子连接 */
dma_channel_subperipheral_select(DMA1, USER_DMA_ADC_CHANNEL, USER_DMA_ADC_SUBPERI);
/* enable DMA circulation mode */
dma_circulation_enable(DMA1, USER_DMA_ADC_CHANNEL);// 开启循环模式
/* enable DMA channel */
dma_channel_enable(DMA1, USER_DMA_ADC_CHANNEL);
/* enable DMA it */
dma_interrupt_enable(DMA1,USER_DMA_ADC_CHANNEL,DMA_INT_FTF);//DMA传输完成标志位 打开全部完成中断
nvic_irq_enable(DMA_ADC_IRQn, DMA_ADC_PRIORITY_PRE, DMA_ADC_PRIORITY_SUB);
}
void adc_config(void)
{
adc_deinit();// 复位ADC配置可选但建议初始化时做一次
adc_special_function_config(ADCX, ADC_SCAN_MODE, SCAN_STATUS);// 打开扫描模式
adc_special_function_config(ADCX, ADC_CONTINUOUS_MODE, CONTINUOUS_STATUS);// 禁止连续模式 -> 单次转换模式
adc_data_alignment_config(ADCX, ADC_DATAALIGN_RIGHT);// 配置数据对齐方式为右对齐
adc_resolution_config(ADCX, ADC_RESOLUTION_12B);// 配置ADC分辨率12位
/* 设置转换通道序列 */
adc_channel_length_config(ADCX, SEQUENCE_CHANNEL, CHANNEL_LENGTH);// 配置规则序列的长度2个通道
adc_routine_channel_config(ADCX, 0, VOLTAGE_ADC_CHANNEL, ADC_SAMPLETIME_480);
adc_routine_channel_config(ADCX, 1, CURRENT_ADC_CHANNEL, ADC_SAMPLETIME_480);
/* 使能外部触发:这里使用软件触发,所以先禁用硬件触发 */
adc_external_trigger_source_config(ADCX, SEQUENCE_CHANNEL, ADC_EXTTRIG_ROUTINE_T0_CH0);
adc_external_trigger_config(ADCX, SEQUENCE_CHANNEL, DISABLE);
/* ADC dma config */
adc_dma_request_after_last_enable(ADCX);
adc_dma_mode_enable(ADCX);
adc_enable(ADCX);// 开启ADC
rt_thread_mdelay(50);// 等待ADC稳定后续接校准
adc_calibration_enable(ADCX);// 执行ADC自校准
adc_software_trigger_enable(ADCX, SEQUENCE_CHANNEL);// 软件触发使能 后续接读取
}
/**
* @brief ADC测量值
* @param ADC通道结构体中的成员序号
* @return
*/
uint16_t BSP_ADCDataAcquire(uint8_t _index)
{
return USER_ADC_DMA_DATA_BUFF[_index];
}
/* ---------------------------------------------------------------------------------------------------------------- */
// adc电压采集
float ptz_Voltage_collect_adc1_task()
{
// 配置规则序列序号0是电压通道序号1是电流通道
adc_routine_channel_config(ADCX, 0, VOLTAGE_ADC_CHANNEL, ADC_SAMPLETIME_480);
// 使能外部触发:这里使用软件触发,所以先禁用硬件触发
adc_external_trigger_config(ADCX, ADC_ROUTINE_CHANNEL, DISABLE);
// 软件触发使能
adc_software_trigger_enable(ADCX, ADC_ROUTINE_CHANNEL);
static float adc1_v[LB_V_TIMES];
static float curadc1_out_v;
static uint8_t adc1_v_num;
@ -89,11 +144,13 @@ float ptz_Voltage_collect_adc1_task()
float curadc1;
uint16_t value_V = 0;
/* 配置规则序列序号0是电压通道序号1是电流通道 */
adc_routine_channel_config(ADCX, 0, VOLTAGE_ADC_CHANNEL, ADC_SAMPLETIME_480);
adc_software_trigger_enable(ADCX, SEQUENCE_CHANNEL);// 软件触发使能 后续接读取
while(adc_flag_get(ADCX, ADC_FLAG_EOC) == RESET); // 等待转换结束
value_V = adc_routine_data_read(ADCX); // 读取规则组数据寄存器
/* 间接测量11倍分压/放大 */
adc1_v[adc1_v_num] = (float)value_V / 4095.0 * 3.3;
@ -101,7 +158,7 @@ float ptz_Voltage_collect_adc1_task()
if(adc1_v_num >= LB_V_TIMES)
{
adc1_v_num = 0;
for(j = 0; j < LB_V_TIMES-1; j++)//采样值由小到大排列
for(j = 0; j < LB_V_TIMES-1; j++)// 采样值由小到大排列
{
for(k = 0; k < LB_V_TIMES-j-1; k++)
{
@ -117,9 +174,9 @@ float ptz_Voltage_collect_adc1_task()
{
curadc1 = curadc1 + adc1_v[i];
}
curadc1 = curadc1 /((float)(LB_V_TIMES - 2));//去掉一个最大值和一个最小值求平均值
curadc1 = curadc1 /((float)(LB_V_TIMES - 2));// 去掉一个最大值和一个最小值求平均值
// g_ptz.Voltage = curadc1;
memset(adc1_v, 0, sizeof(adc1_v));//adc1_v 快速清零
memset(adc1_v, 0, sizeof(adc1_v));// adc1_v 快速清零
curadc1_out_v = curadc1;
}
return curadc1_out_v;
@ -129,15 +186,6 @@ float ptz_Voltage_collect_adc1_task()
// adc电流采集
float ptz_Current_collect_adc1_task()
{
// 配置规则序列序号0是电压通道序号1是电流通道
adc_routine_channel_config(ADCX, 0, CURRENT_ADC_CHANNEL, ADC_SAMPLETIME_480);
// 使能外部触发:这里使用软件触发,所以先禁用硬件触发
adc_external_trigger_config(ADCX, ADC_ROUTINE_CHANNEL, DISABLE);
// 软件触发使能
adc_software_trigger_enable(ADCX, ADC_ROUTINE_CHANNEL);
static float adc1_i[LB_I_TIMES];
static float curadc1_out_i;
static uint8_t adc1_i_num;
@ -146,7 +194,11 @@ float ptz_Current_collect_adc1_task()
float curadc1;
uint16_t value_I = 0;
while(adc_flag_get(ADCX, ADC_FLAG_EOC) == RESET); // 等待转换结束
// 配置规则序列序号0是电压通道序号1是电流通道
adc_routine_channel_config(ADCX, 0, CURRENT_ADC_CHANNEL, ADC_SAMPLETIME_480);
adc_software_trigger_enable(ADCX, SEQUENCE_CHANNEL);// 软件触发使能 后续接读取
while(adc_flag_get(ADCX, ADC_FLAG_EOC) == RESET); // 等待转换结束->等到SET
value_I = adc_routine_data_read(ADCX); // 读取规则组数据寄存器
/* 间接测量11倍分压/放大 */

View File

@ -1,6 +1,14 @@
#ifndef __DRV_ADC_H_
#define __DRV_ADC_H_
#include "tmp75.h"
#include "stdlib.h"
#include "string.h"
#include "gd32f4xx.h"
#include "gd32f4xx_adc.h"
#include "gd32f4xx_dma.h"
#include "rtthread.h"
/* 自定义宏,方便修改通道和引脚 */
#define ADCX ADC1
#define VOLTAGE_ADC_CHANNEL ADC_CHANNEL_12
@ -8,11 +16,43 @@
#define ADC_GPIO_PORT GPIOC
#define VOLTAGE_ADC_PIN GPIO_PIN_2
#define CURRENT_ADC_PIN GPIO_PIN_3
#define ADC_CHANNEL_NUM 1 // 规则组配置规则序列的通道2个通道
#define LB_V_TIMES 7
#define LB_I_TIMES 12
#define LB_T_TIMES 7
#define LB_V_TIMES 7 //电压采样滤波次数
#define LB_I_TIMES 12 //电流采样滤波次数
#define LB_T_TIMES 7 //温度采样滤波次数
/*
adc模式配置参数
ENABLE
DISABLE
*/
#define CONTINUOUS_STATUS ENABLE// 是否开启连续转换
#define SEQUENCE_CHANNEL ADC_ROUTINE_CHANNEL// 注入组还是规则组
#define SCAN_STATUS ENABLE// 是否开启扫描模式
#define DMA_STATUS ENABLE// 是否开启dma
#define CHANNEL_LENGTH 2// 通道数量:1~16
/* adc dma */
#define USER_DMA_ADC_CHANNEL DMA_CH3 //DMA通道ADC0:DMA_CH0 DMA_CH4
// ADC1:DMA_CH2 DMA_CH3
// ADC2:DMA_CH0 DMA_CH3
#define USER_DMA_ADC_SUBPERI DMA_SUBPERI1 //DMA外设源:ADC0:DMA_SUBPERI0
// ADC1:DMA_SUBPERI1
// ADC2:DMA_SUBPERI2
#define DMA_ADC_IRQn DMA1_Channel0_IRQn //DMA1_Channel0_IRQn
//DMA1_Channel1_IRQn
//DMA1_Channel2_IRQn
//DMA1_Channel3_IRQn
//DMA1_Channel4_IRQn
#define DMA_ADC_PRIORITY_PRE 0 //抢占优先级
#define DMA_ADC_PRIORITY_SUB 1 //子优先级
void adc_init(void);
void adc_rcu_config(void);
void adc_gpio_config(void);
void adc_dma_config(void);
void adc_config(void);
float ptz_Voltage_collect_adc1_task();
float ptz_Current_collect_adc1_task();

View File

@ -20,7 +20,8 @@ static struct gd32_usart_config usart_config[] = {
// 初始化所有配置的串口
void gd32_usart_init(void)
{
for (int i = 0; i < sizeof(usart_config) / sizeof(usart_config[0]); i++) {
for (int i = 0; i < sizeof(usart_config) / sizeof(usart_config[0]); i++)
{
gd32_usart_configure(&usart_config[i]);
}
}
@ -46,8 +47,8 @@ void gd32_usart_configure(struct gd32_usart_config *config)
usart_word_length_set(config->usart_periph, USART_WL_8BIT);
usart_stop_bit_set(config->usart_periph, USART_STB_1BIT);
usart_parity_config(config->usart_periph, USART_PM_NONE);
usart_hardware_flow_rts_config(config->usart_periph, USART_RTS_DISABLE);
usart_hardware_flow_cts_config(config->usart_periph, USART_CTS_DISABLE);
// usart_hardware_flow_rts_config(config->usart_periph, USART_RTS_DISABLE);
// usart_hardware_flow_cts_config(config->usart_periph, USART_CTS_DISABLE);
usart_receive_config(config->usart_periph, USART_RECEIVE_ENABLE);
usart_transmit_config(config->usart_periph, USART_TRANSMIT_ENABLE);
@ -74,6 +75,12 @@ void gd32_usart_puts(struct gd32_usart_config *config, const char *str)
}
}
void usart_puts(const char *str)
{
gd32_usart_puts(&usart_config[0], str);
}
// 获取串口配置 by name
struct gd32_usart_config *gd32_usart_get_config(const char *name)
{

View File

@ -19,6 +19,7 @@ struct gd32_usart_config {
uint8_t irq_type;
};
// 函数声明
void gd32_usart_init(void);
void gd32_usart_configure(struct gd32_usart_config *config);

256
drivers/tmp75/tmp75.c Normal file
View File

@ -0,0 +1,256 @@
/*************************************************
Copyright (c) 2025,
All rights reserved.
@file tmp75.C
@brief tmp75驱动程序
@details
@note
@author dufresne
@date 2025/09/15
@version v1.0 2025/09/15
*************************************************/
#include "tmp75.h"
#include "rtthread.h"
#include <core_cm4.h>
/*
@ brief
@ param
@ return
@ note 2025-09-15
*/
static void delay_us(int us)
{
rt_thread_udelay(us);
}
/*
@ brief tmp75芯片GPIO引脚
@ param
@ return
@ note 2025-09-15
*/
void temp75_gpio_init()
{
// 配置引脚时钟
rcu_periph_clock_enable(RCU_GPIOB);
// 设置引脚为输出模式:PB6
gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_6);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_6);
// 设置引脚PB7输出模式
gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_7);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_7);
TMP75_SCL_HIGH;
TMP75_SDA_HIGH;
}
/*
@ brief SDA引脚为输出模式
@ param
@ return
@ note 2025-09-15
*/
static void tmp75_sda_output()
{
gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_7);
gpio_output_options_set(GPIOB, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_7);
}
/*
@ brief SDA引脚为输入模式
@ param
@ return
@ note 2025-09-15
*/
static void tmp75_sda_input()
{
gpio_mode_set(GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_NONE, GPIO_PIN_7);
// gpio_output_options_set(GPIOB, GPIO_PUPD_NONE, GPIO_OSPEED_50MHZ, GPIO_PIN_7);
}
/*
@ brief I2C start信号
@ param
@ return
@ note 2025-09-15
*/
static void i2c_start()
{
TMP75_SDA_HIGH;
TMP75_SCL_HIGH;
TMP75_SDA_LOW;
delay_us(40);
}
/*
@ brief I2C stop信号
@ param
@ return
@ note 2025-09-15
*/
static void i2c_stop()
{
TMP75_SDA_LOW;
TMP75_SCL_HIGH;
TMP75_SDA_HIGH;
}
/*
@ brief
@ param
@ return
@ note 2025-09-15
*/
static void tmp75_write_byte(uint8_t byte)
{
for (int i = 0; i < 8; i++)
{
TMP75_SCL_LOW;
delay_us(4);
if (byte & 0x80)
{
TMP75_SDA_HIGH;
}
else
{
TMP75_SDA_LOW;
}
byte <<= 1;
TMP75_SCL_HIGH;
delay_us(40);
}
TMP75_SCL_LOW;
}
/*
@ brief CPU接收TMP75返回的ACK信号
@ param
@ return
@ note 2025-09-15
*/
static void tmp75_ack()
{
int i = 0;
// 将sda设置为输入模式
tmp75_sda_input();
TMP75_SCL_HIGH;
while ((TMP75_SDA_GET) && (i < 1000))
{
i++;
}
TMP75_SCL_LOW;
// 将sda设置为输出模式
tmp75_sda_output();
}
/*
@ brief
@ param
@ return value:
@ note 2025-09-15
*/
static uint8_t tmp75_read_byte()
{
uint8_t value = 0;
tmp75_sda_input();
TMP75_SCL_LOW;
for (int i = 0; i < 8; i++)
{
TMP75_SCL_HIGH;
value <<= 1;
delay_us(10);
if (TMP75_SDA_GET)
{
value = value | 0x01;
}
TMP75_SCL_LOW;
delay_us(10);
}
tmp75_sda_output();
return value;
}
/*
@ brief ack信号
@ param
@ return
@ note 2025-09-15
*/
static void master_ack()
{
TMP75_SDA_LOW;
delay_us(5);
TMP75_SCL_HIGH;
delay_us(5);
TMP75_SCL_LOW;
delay_us(5);
}
/*
@ brief noack信号
@ param
@ return
@ note 2025-09-15
*/
static void master_noack()
{
TMP75_SDA_HIGH;
delay_us(5);
TMP75_SCL_HIGH;
delay_us(5);
TMP75_SCL_LOW;
delay_us(5);
}
/*
@ brief
@ param
@ return
@ note 2025-09-15
*/
float tmp75_read_temp(void)
{
uint8_t tempH = 0;
uint8_t tempL = 0;
uint16_t tempCode = 0;
float temp = 0;
// 起始信号
i2c_start();
// 写tmp75地址
tmp75_write_byte(TMP75_ADDRESS);
// 接收tmp75的ack信息
tmp75_ack();
// 发送需读取数据的地址
tmp75_write_byte(TEMP_REGISTER_ADDRESS);
tmp75_ack();
i2c_start();
// 写tmp75地址
tmp75_write_byte(TMP75_ADDRESS + 1); // 读地址数据
tmp75_ack();
tempH = tmp75_read_byte();
master_ack();
tempL = tmp75_read_byte();
master_noack();
i2c_stop();
tempCode = (tempH << 8) | tempL;
tempCode = tempCode >> 6;
if (tempCode & 0x200) // 负温度
{
tempCode &= 0x1ff;
temp = ((float)tempCode - 512) / 4;
}
else
{
temp = (float)tempCode / 4;
}
TMP75_SDA_LOW;
TMP75_SCL_LOW;
return (temp);
}

31
drivers/tmp75/tmp75.h Normal file
View File

@ -0,0 +1,31 @@
///Copyright (c) 2022, 四川汇源光通信有限公司
///All rights reserved.
///@file tmp75.h
///@brief tmp75驱动程序
///
///@details
///@note
///@author lqc
///@date 2022/05/23
///
///@version v1.0 2022/05/23 初始版本
#ifndef __TMP75_H_
#define __TMP75_H_
#include "gd32f4xx_gpio.h"
#define TMP75_ADDRESS 0x90
#define TEMP_REGISTER_ADDRESS 0x00 //温度寄存器地址
#define TMP75_SCL_HIGH gpio_bit_set(GPIOB, GPIO_PIN_6)
#define TMP75_SCL_LOW gpio_bit_reset(GPIOB, GPIO_PIN_6)
#define TMP75_SDA_HIGH gpio_bit_set(GPIOB, GPIO_PIN_7)
#define TMP75_SDA_LOW gpio_bit_reset(GPIOB, GPIO_PIN_7)
#define TMP75_SDA_GET gpio_input_bit_get(GPIOB, GPIO_PIN_7)
void temp75_gpio_init();
float tmp75_read_temp(void);
#endif