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Author SHA1 Message Date
1752e3824c rs485 2025-04-04 09:15:36 +08:00
e1277c9c7a rs485 2025-04-03 09:17:44 +08:00
3ed6a69014 关门放狗 2025-04-03 09:15:05 +08:00
8eaf1f43bc RS485 2025-04-03 09:14:13 +08:00
1c7417371e RS485 2025-04-03 09:13:34 +08:00
6310977c99 Merge branch 'dev-autoDetectDriveCurrent' into dev
# Conflicts:
#	inc/board_config.h
2025-04-03 09:12:53 +08:00
e8f0161e32 RS485 2025-04-03 09:10:52 +08:00
7a91986b9b clean shit 2025-04-03 01:17:33 +08:00
61ddbcf2cd RS485 hardware function OK! 2025-04-03 00:59:48 +08:00
688866108c auto detect 2025-04-02 19:32:12 +08:00
fd2f72914d debug vofa 2025-04-02 15:33:35 +08:00
db780ba529 auto detect drive current function OK!!! 2025-04-02 14:15:48 +08:00
2a0e0b40b6 Revert "auto detect drive current function OK!!!"
This reverts commit 6c37fecd28770b74befd507383ad75360f663d4e.
2025-04-02 14:12:25 +08:00
6c37fecd28 auto detect drive current function OK!!! 2025-04-02 14:10:28 +08:00
a9599bae5e RS485 test 2025-04-01 23:19:51 +08:00
da22e0eff9 Merge remote-tracking branch 'origin/dev' into dev 2025-04-01 17:22:00 +08:00
892c59c2d3 添加寄存器说明 2025-04-01 17:21:49 +08:00
8 changed files with 225 additions and 7 deletions

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@ -4,11 +4,11 @@ include(cmake/toolchain.cmake)
project(xlsw_3dp_LDC1612) project(xlsw_3dp_LDC1612)
set(VERSION_MAJOR 0) set(VERSION_MAJOR 0)
set(VERSION_MINOR 2) set(VERSION_MINOR F)
set(VERSION_PATCH 0) set(VERSION_PATCH 1)
set(VERSION "V${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}") set(VERSION "V${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
string(TIMESTAMP CURRENT_DATE "%Y-%m-%d") string(TIMESTAMP CURRENT_DATE "%Y-%m-%d")
set(IIC_TYPE "SW-IIC") set(IIC_TYPE "AutoDetectDriveCurrent")
#set(IIC_TYPE "HW-IIC") #set(IIC_TYPE "HW-IIC")
enable_language(C) enable_language(C)

144
README.md
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@ -7,3 +7,147 @@
## 电涡流传感器模块通信协议 ## 电涡流传感器模块通信协议
通信协议:[LDC1612通信协议](CommunicationProtocol.md) 通信协议:[LDC1612通信协议](CommunicationProtocol.md)
---
## LDC1612寄存器配置
### **1. 软件复位 (RESET_DEV)**
- **寄存器地址**: 0x1C
- **写入值**: 0x8000
- **字段解析**
- **Bit 15 (RESET_DEV)**: 写1触发硬件复位完成后自动清零。
- **Bits 14-0**: 保留位必须写0。
### **2. 进入休眠模式 (CONFIG)**
- **寄存器地址**: 0x1A
- **写入值**: 0x2801
- **字段解析**(按位分解):
| Bit位 | 字段名 | 值 | 功能说明 |
|-------|-----------------------|-----|--------------------------|
| 15-14 | ACTIVE_CHAN | 00 | 未使用(休眠模式下无效) |
| 13 | SLEEP_MODE_EN | 1 | 使能休眠模式 |
| 12 | RP_OVERRIDE_EN | 0 | 禁用Rp覆盖默认 |
| 11 | SENSOR_ACTIVATE_SEL | 0 | 全电流激活模式 |
| 10 | AUTO_AMP_DIS | 0 | 启用自动幅度校正 |
| 9 | REF_CLK_SRC | 0 | 使用内部时钟源 |
| 8 | Reserved | 0 | 保留位 |
| 7 | INTB_DIS | 0 | 使能INTB中断 |
| 6 | HIGH_CURRENT_DRV | 0 | 禁用高电流驱动模式 |
| 5-0 | Reserved | 000001 | 保留位(默认值) |
### **3. 配置通道0时钟分频 (CLOCK_DIVIDERS_CH0)**
- **寄存器地址**: 0x14
- **写入值**: 0x1002
- **字段解析**
| 字段名 | 位域 | 值 | 功能说明 |
|--------------------|-----------|-------|--------------------------|
| CH0_FIN_DIVIDER | Bits 15-12 | 0x1 | 传感器分频系数=1不分频 |
| Reserved | Bits 11-10 | 0x0 | 保留位 |
| CH0_FREF_DIVIDER | Bits 9-0 | 0x002 | 参考分频系数=2f_REF=40MHz/2=20MHz |
### **4. 设置通道0转换时间 (RCOUNT_CH0)**
- **寄存器地址**: 0x08
- **写入值**: 0x04D6 (十进制1238)
- **计算公式**
\[
t_{C0} = \frac{(0x04D6 \times 16)}{20\text{MHz}} = 991\mu s
\]
### **5. 设置通道0稳定时间 (SETTLECOUNT_CH0)**
- **寄存器地址**: 0x10
- **写入值**: 0x000A (十进制10)
- **计算公式**
\[
t_{S0} = \frac{(0x000A \times 16)}{20\text{MHz}} = 8\mu s
\]
### **6. 配置通道0驱动电流 (DRIVE_CURRENT_CH0)**
- **寄存器地址**: 0x1E
- **写入值**: 0x9000
- **字段解析**
| 字段名 | 位域 | 值 | 功能说明 |
|--------------------|-----------|-------|--------------------------|
| CH0_IDRIVE | Bits 15-11 | 0x12 | 驱动电流值=18对应Rp=6.6kΩ查表9 |
| CH0_INIT_IDRIVE | Bits 10-6 | 0x00 | 初始电流值(未使用) |
| Reserved | Bits 5-0 | 0x00 | 保留位 |
### **7. 多通道扫描配置 (MUX_CONFIG)**
- **寄存器地址**: 0x1B
- **写入值**: 0x820C
- **字段解析**
| 字段名 | 位域 | 值 | 功能说明 |
|--------------------|-----------|-------|--------------------------|
| AUTOSCAN_EN | Bit 15 | 1 | 启用自动扫描模式 |
| RR_SEQUENCE | Bits 14-13 | 00 | 扫描顺序Ch0→Ch1 |
| Reserved | Bits 12-3 | 0x020 | 保留位(默认值) |
| DEGLITCH | Bits 2-0 | 0x4 | 去抖动滤波器带宽=3.3MHz |
### **8. 退出休眠并启动转换 (CONFIG)**
- **寄存器地址**: 0x1A
- **写入值**: 0x1601
- **字段解析**(关键位):
| Bit位 | 字段名 | 值 | 功能说明 |
|-------|-----------------------|-----|--------------------------|
| 13 | SLEEP_MODE_EN | 0 | 退出休眠模式 |
| 9 | REF_CLK_SRC | 1 | 使用外部时钟CLKIN=40MHz|
| 12 | RP_OVERRIDE_EN | 1 | 启用Rp覆盖固定驱动电流 |
### **关键参数总结表**
| 寄存器名 | 地址 | 写入值 | 核心功能 |
|----------------------|-------|--------|----------------------------|
| RESET_DEV | 0x1C | 0x8000 | 强制复位设备 |
| CONFIG (休眠) | 0x1A | 0x2801 | 进入配置模式 |
| CLOCK_DIVIDERS_CH0 | 0x14 | 0x1002 | 通道0时钟分频设置 |
| RCOUNT_CH0 | 0x08 | 0x04D6 | 通道0转换时间=991μs |
| SETTLECOUNT_CH0 | 0x10 | 0x000A | 通道0稳定时间=8μs |
| DRIVE_CURRENT_CH0 | 0x1E | 0x9000 | 通道0驱动电流=18约1.5mA |
| MUX_CONFIG | 0x1B | 0x820C | 启用双通道扫描Ch0→Ch1 |
| CONFIG (启动) | 0x1A | 0x1601 | 退出休眠,启用外部时钟 |
通过以上配置,设备将按以下流程运行:
1. 复位后进入休眠模式,配置寄存器。
2. 设置通道0的时钟分频、转换时间、稳定时间和驱动电流。
3. 启用双通道自动扫描,设置去抖动滤波器。
4. 退出休眠模式,开始连续转换。
---
## **自动校准配置(可选)**
### **适用场景**
- Rp未知或环境变化大时通过自动校准获取初始电流值。
### **操作流程**
1. **设置目标至最大距离**
2. **进入休眠模式**
```c
write_register(0x1A, 0x2801); // SLEEP_MODE_EN=1
```
3. **启用自动校准**
```c
// CLOCK_DIVIDERS_CH0配置分频
write_register(0x14, 0x1002); // FIN_DIV=1, FREF_DIV=2
// 禁用Rp覆盖
uint16_t config = read_register(0x1A);
config &= ~(1 << 12); // RP_OVERRIDE_EN=0
write_register(0x1A, config);
```
4. **启动测量并读取初始值**
```c
write_register(0x1A, 0x1601); // 退出休眠
delay(10); // 等待至少一次转换完成
uint16_t init_value = (read_register(0x1E) >> 6) & 0x1F; // 读取CH0_INIT_IDRIVE
```
5. **写入驱动电流**
```c
uint16_t drive_current = (init_value << 11) | 0x0000;
write_register(0x1E, drive_current);
```
---

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@ -9,6 +9,10 @@
// #define DEBUG_VERBOES // #define DEBUG_VERBOES
#define RS485_MAX13487
// #define DEBUG_VOFA_TOOL
/******************************************************************************/ /******************************************************************************/
#define RCU_GPIO_I2C RCU_GPIOF #define RCU_GPIO_I2C RCU_GPIOF

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@ -51,16 +51,18 @@
#define LDC1612_DRIVE_CURRENT 0x9000 //A000 #define LDC1612_DRIVE_CURRENT 0x9000 //A000
#define LDC1612_MUX_CONFIG 0x020C // no auto scan and filter bandwidth 3.3MHz #define LDC1612_MUX_CONFIG 0x020C // no auto scan and filter bandwidth 3.3MHz
#define LDC1612_SENSOR_CONFIG 0x1601 #define LDC1612_SENSOR_CONFIG 0x1601
#define LDC1612_SLEEP_MODE 0x2801
#define LDC1612_ERROR_CONFIG 0x0000 #define LDC1612_ERROR_CONFIG 0x0000
#define LC_STABILIZE_TIME_CH0 0x001E //30 #define LC_STABILIZE_TIME_CH0 0x001E //30
#define LDC1612_RESET_DEV 0x8000 //[15:0] 0b1000 0000 0000 0000 #define LDC1612_RESET_DEV 0x8000 //[15:0] 0b1000 0000 0000 0000
/******************************************************************************/ /******************************************************************************/
#define COIL_RP_KOM 15.727 #define COIL_RP_KOM 7.2
#define COIL_L_UH 33 #define COIL_L_UH 33
#define COIL_C_PF 150 #define COIL_C_PF 150
#define COIL_Q_FACTOR 35.97 #define COIL_Q_FACTOR 35.97
#define COIL_FREQ_HZ 2262000
/******************************************************************************/ /******************************************************************************/
@ -94,4 +96,6 @@ uint32_t ldc1612_get_raw_channel_result(uint8_t channel);
uint32_t ldc1612_parse_raw_result(uint32_t raw_result); uint32_t ldc1612_parse_raw_result(uint32_t raw_result);
void ldc1612_drvie_current_detect(uint8_t channel);
#endif //LDC1612_H #endif //LDC1612_H

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@ -276,3 +276,20 @@ uint32_t ldc1612_parse_raw_result(uint32_t raw_result) {
return raw_result; return raw_result;
} }
void ldc1612_drvie_current_detect(uint8_t channel) {
uint8_t data[2] = {0};
uint16_t init_value = 0 , drive_current = 0;
ldc1612_set_sensor_config(LDC1612_SLEEP_MODE);
ldc1612_set_freq_divide(channel);
soft_i2c_read_16bits(LDC1612_ADDR, SENSOR_CONFIG_REG, data);
ldc1612_set_sensor_config(LDC1612_SLEEP_MODE);
ldc1612_set_sensor_config(LDC1612_SENSOR_CONFIG); //0x1A --0x1601
delay_ms(10);
soft_i2c_read_16bits(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, data);
init_value = (((data[0] << 8) | data[1]) >> 6) & 0x1F;
drive_current = (init_value << 11) | 0x0000;
printf("init value: 0x%x\tdrive current: 0x%x\n", init_value, drive_current);
}

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@ -28,5 +28,5 @@ void led_config(void) {
timer_enable(LED_BLINK_TIMER); timer_enable(LED_BLINK_TIMER);
nvic_irq_enable(LED_BLINK_IRQ, 2); nvic_irq_enable(LED_BLINK_IRQ, 3U);
} }

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@ -39,7 +39,8 @@ int main(void) {
watchdog_init(); watchdog_init();
while (1) { while (1) {
delay_ms(99);
// delay_ms(10);
fwdgt_counter_reload(); fwdgt_counter_reload();
} }
} }

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@ -8,6 +8,43 @@ uint8_t package_header[3] = {0xB5, 0xF0, 0x04};
uint8_t package_data[4] = {0}; uint8_t package_data[4] = {0};
void rs485_config(void) { void rs485_config(void) {
#ifndef RS485_MAX13487
rcu_periph_clock_enable(RS485_GPIO_RCU);
rcu_periph_clock_enable(RS485_RCU);
gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, RS485_TX_PIN | RS485_RX_PIN | RS485_EN_PIN);
/* configure USART Tx&Rx as alternate function push-pull */
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, RS485_TX_PIN | RS485_RX_PIN);
/* configure RS485 EN Pin */
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, RS485_EN_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
// gpio_bit_write(RS485_GPIO_PORT, RS485_EN_PIN, SET);
/* USART configure */
usart_deinit(RS485_PHY);
usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
// usart_parity_config(RS485_PHY, USART_PM_NONE);
// usart_word_length_set(RS485_PHY, USART_WL_8BIT);
// usart_stop_bit_set(RS485_PHY, USART_STB_1BIT);
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
usart_driver_assertime_config(RS485_PHY, 0x01);
usart_driver_deassertime_config(RS485_PHY, 0x01);
// usart_depolarity_config(USART0, USART_DEP_HIGH);
// usart_depolarity_config(USART0, USART_DEP_LOW);
usart_rs485_driver_enable(RS485_PHY);
usart_enable(RS485_PHY);
nvic_irq_enable(USART0_IRQn, 0);
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
#else
rcu_periph_clock_enable(RS485_GPIO_RCU); rcu_periph_clock_enable(RS485_GPIO_RCU);
rcu_periph_clock_enable(RS485_RCU); rcu_periph_clock_enable(RS485_RCU);
@ -33,6 +70,7 @@ void rs485_config(void) {
nvic_irq_enable(USART0_IRQn, 0); nvic_irq_enable(USART0_IRQn, 0);
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE); usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
usart_interrupt_enable(RS485_PHY, USART_INT_IDLE); usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
#endif
} }
void process_command(uint8_t *cmd, size_t length) { void process_command(uint8_t *cmd, size_t length) {
@ -131,6 +169,15 @@ void eddy_current_value_report(void) {
package_data[2] = (eddy_current_value_uint32 >> 8) & 0xFF; package_data[2] = (eddy_current_value_uint32 >> 8) & 0xFF;
package_data[3] = eddy_current_value_uint32 & 0xFF; package_data[3] = eddy_current_value_uint32 & 0xFF;
#ifdef DEBUG_VOFA_TOOL
printf("%d\n", eddy_current_value_uint32);
#else
package_data[0] = (eddy_current_value_uint32 >> 24) & 0xFF;
package_data[1] = (eddy_current_value_uint32 >> 16) & 0xFF;
package_data[2] = (eddy_current_value_uint32 >> 8) & 0xFF;
package_data[3] = eddy_current_value_uint32 & 0xFF;
uint8_t combined_data[7]; uint8_t combined_data[7];
memcpy(combined_data, package_header, 3); memcpy(combined_data, package_header, 3);
memcpy(combined_data + 3, package_data, 4); memcpy(combined_data + 3, package_data, 4);
@ -138,6 +185,7 @@ void eddy_current_value_report(void) {
printf("%c%c%c", package_header[0], package_header[1], package_header[2]); printf("%c%c%c", package_header[0], package_header[1], package_header[2]);
printf("%c%c%c%c", package_data[0], package_data[1], package_data[2], package_data[3]); printf("%c%c%c%c", package_data[0], package_data[1], package_data[2], package_data[3]);
printf("%c", calculate_crc(combined_data, 8)); printf("%c", calculate_crc(combined_data, 8));
#endif
} }
void tempture_value_report(void) { void tempture_value_report(void) {