SPL06_001数据手册及驱动例程
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资料来源网络资源，仅供参考学习
一、SPL06芯片介绍
1、SPL06-001一款小型化数字气压传感器，具有高精度和低功耗的优点；它既是压力传感器，也是温度传感器。压力传感元件基于电容式传感原理，确保了在温度变化时仍能保持高精度。适用于移动应用和可穿戴设备。
SPL06 - 001的内部信号处理器将压力和温度传感元件的输出转换为24位结果。每个压力传感器都经过单独校准，并包含校准系数。这些系数在应用中用于将测量结果转换为实际的压力和温度值。
SPL06 - 001有一个先进先出（FIFO）缓冲区，可存储最新的32次测量数据。通过使用该FIFO缓冲区，主处理器在读数之间可以更长时间地保持睡眠模式。 传感器测量数据和校准系数可通过串行I2C接口获取。
二、应用时的关键内容
1、供电电压
Supply voltage: 1.7 ... 3.6V (VDD), 1.2 ... 3.6V (VDDIO)
2、引脚布局
3、引脚说明
4、寄存器介绍
传感器的地址：0x77（默认）或0x76（如果SDO引脚拉低接地）
详细内容参考SPL06数据手册
4.1气压数据（Pressure Data）PSR_Bn
4.2温度数据（Temperature Data）TMP_Bn
4.3压力测量速率和分辨率配置（Pressure Configuration）PRS_CFG
4.4温度测量速率和分辨率配置（Temperature Configuration）TMP_CFG
4.5工作模式和状态（Sensor Operating Mode And Status）MEAS_CFG
4.6中断和FIFO配置（Interrupt And FIFO Configuration）CFG_REG
4.7中断状态寄存器（Iterrupt Status）INT_STS
4.8先进先出状寄存器（FIFO Status）FIFO_STS
4.9先进先出刷新和软复位（Soft Reset And FIFO Flush）RESET
4.10产品及修订编号（Product And Revision ID）ID
三、驱动例程
1、SPL06.H
#ifndef __SPL06_H
#define __SPL06_H
#include "stm32f10x.h"
/**< \brief 寄存器地址 */
#define SP06_PSR_B2 0x00
#define SP06_PSR_B1 0x01
#define SP06_PSR_B0 0x02
#define SP06_TMP_B2 0x03
#define SP06_TMP_B1 0x04
#define SP06_TMP_B0 0x05
#define SP06_PSR_CFG 0x06
#define SP06_TMP_CFG 0x07
#define SP06_MEAS_CFG 0x08
#define SP06_CFG_REG 0x09
#define SP06_INT_STS 0x0A
#define SP06_FIFO_STS 0x0B
#define SP06_RESET 0x0C
#define SP06_ID 0x0D
#define SP06_COEF 0x10
#define SP06_COEF_SRCE 0x28
/**< \brief 气压测量速率(sample/sec),Background 模式使用 */
#define PM_RATE_1 (0<<4) /* 1 measurements pr. sec. */
#define PM_RATE_2 (1<<4) /* 2 measurements pr. sec. */
#define PM_RATE_4 (2<<4) /* 4 measurements pr. sec. */
#define PM_RATE_8 (3<<4) /* 8 measurements pr. sec. */
#define PM_RATE_16 (4<<4) /* 16 measurements pr. sec. */
#define PM_RATE_32 (5<<4) /* 32 measurements pr. sec. */
#define PM_RATE_64 (6<<4) /* 64 measurements pr. sec. */
#define PM_RATE_128 (7<<4) /* 128 measurements pr. sec. */
/**< \brief 气压重采样速率(times),Background 模式使用 */
#define PM_PRC_1 0 /* Sigle kP=524288, 3.6ms */
#define PM_PRC_2 1 /* 2 times kP=1572864, 5.2ms */
#define PM_PRC_4 2 /* 4 times kP=3670016, 8.4ms */
#define PM_PRC_8 3 /* 8 times kP=7864320, 14.8ms */
#define PM_PRC_16 4 /* 16 times kP=253952, 27.6ms */
#define PM_PRC_32 5 /* 32 times kP=516096, 53.2ms */
#define PM_PRC_64 6 /* 64 times kP=1040384, 104.4ms */
#define PM_PRC_128 7 /* 128 times kP=2088960, 206.8ms */
/**< \brief 温度测量速率(sample/sec),Background 模式使用 */
#define TMP_RATE_1 (0<<4) /* 1 measurements pr. sec. */
#define TMP_RATE_2 (1<<4) /* 2 measurements pr. sec. */
#define TMP_RATE_4 (2<<4) /* 4 measurements pr. sec. */
#define TMP_RATE_8 (3<<4) /* 8 measurements pr. sec. */
#define TMP_RATE_16 (4<<4) /* 16 measurements pr. sec. */
#define TMP_RATE_32 (5<<4) /* 32 measurements pr. sec. */
#define TMP_RATE_64 (6<<4) /* 64 measurements pr. sec. */
#define TMP_RATE_128 (7<<4) /* 128 measurements pr. sec. */
/**< \brief 温度重采样速率(times),Background 模式使用 */
#define TMP_PRC_1 0 /* Sigle */
#define TMP_PRC_2 1 /* 2 times */
#define TMP_PRC_4 2 /* 4 times */
#define TMP_PRC_8 3 /* 8 times */
#define TMP_PRC_16 4 /* 16 times */
#define TMP_PRC_32 5 /* 32 times */
#define TMP_PRC_64 6 /* 64 times */
#define TMP_PRC_128 7 /* 128 times */
/**< \brief SPL06_MEAS_CFG */
#define MEAS_COEF_RDY 0x80
#define MEAS_SENSOR_RDY 0x40 /* 传感器初始化完成 */
#define MEAS_TMP_RDY 0x20 /* 有新的温度数据 */
#define MEAS_PRS_RDY 0x10 /* 有新的气压数据 */
#define MEAS_CTRL_Standby 0x00 /* 空闲模式 */
#define MEAS_CTRL_PressMeasure 0x01 /* 单次气压测量 */
#define MEAS_CTRL_TempMeasure 0x02 /* 单次温度测量 */
#define MEAS_CTRL_ContinuousPress 0x05 /* 连续气压测量 */
#define MEAS_CTRL_ContinuousTemp 0x06 /* 连续温度测量 */
#define MEAS_CTRL_ContinuousPressTemp 0x07 /* 连续气压温度测量 */
/**< \brief FIFO_STS */
#define SPL06_FIFO_FULL 0x02
#define SPL06_FIFO_EMPTY 0x01
/**< \brief INT_STS */
#define SPL06_INT_FIFO_FULL 0x04
#define SPL06_INT_TMP 0x02
#define SPL06_INT_PRS 0x01
/**< \brief CFG_REG */
#define SPL06_CFG_T_SHIFT 0x08 /* oversampling times>8时必须使用 */
#define SPL06_CFG_P_SHIFT 0x04 /* oversampling times>8时必须使用 */
typedef int (*pfn_i2c_read) (uint8_t slave_addr,
uint8_t reg_addr,
uint32_t nbytes,
uint8_t *p_data);
typedef int (*pfn_i2c_write) (uint8_t slave_addr,
uint8_t reg_addr,
uint32_t nbytes,
uint8_t *p_data);
#define SPL06_ADDR 0x76
typedef struct
{
int32_t Praw; /* 气压原始值 */
int32_t Traw; /* 温度原始值 */
float Pcomp; /* 计算后的气压值 */
float Tcomp; /* 计算后的温度值 */
} spl06_result_t;
int spl06_init(pfn_i2c_read read, pfn_i2c_write write);
void spl06_get_raw_data(spl06_result_t *p_res);
void spl06_get_result(spl06_result_t *p_res);
#endif
2、SPL06.C
#include "spl06.h"
#include "bsp_systick.h" /* 提供延时函数 */
static pfn_i2c_read i2c_read;
static pfn_i2c_write i2c_write;
static float _kT, _kP;
static int16_t _c0, _c1, _c01,_c11, _c20, _c21, _c30;
static int32_t _c10, _c00;
static void _spl06_pressure_config(uint8_t rate, uint8_t oversampling)
{
uint8_t regval = 0;
switch(oversampling)
{
case PM_PRC_1: _kP = 524288; break;
case PM_PRC_2: _kP = 1572864; break;
case PM_PRC_4: _kP = 3670016; break;
case PM_PRC_8: _kP = 7864320; break;
case PM_PRC_16: _kP = 253952; break;
case PM_PRC_32: _kP = 516096; break;
case PM_PRC_64: _kP = 1040384; break;
case PM_PRC_128: _kP = 2088960; break;
default: break;
}
regval = rate | oversampling;
i2c_write(SPL06_ADDR, SP06_PSR_CFG, 1, ®val);
if(oversampling > PM_PRC_8)
{
i2c_read(SPL06_ADDR, SP06_CFG_REG, 1, ®val);
regval |= SPL06_CFG_P_SHIFT;
i2c_write(SPL06_ADDR, SP06_CFG_REG, 1, ®val);
}
}
static void _spl06_temperature_config(uint8_t rate, uint8_t oversampling)
{
uint8_t regval = 0;
switch(oversampling)
{
case TMP_PRC_1: _kT = 524288; break;
case TMP_PRC_2: _kT = 1572864; break;
case TMP_PRC_4: _kT = 3670016; break;
case TMP_PRC_8: _kT = 7864320; break;
case TMP_PRC_16: _kT = 253952; break;
case TMP_PRC_32: _kT = 516096; break;
case TMP_PRC_64: _kT = 1040384; break;
case TMP_PRC_128: _kT = 2088960; break;
default: break;
}
regval = rate | oversampling | 0x80;
i2c_write(SPL06_ADDR, SP06_TMP_CFG, 1, ®val); /* External sensor */
if(oversampling > PM_PRC_8)
{
i2c_read(SPL06_ADDR, SP06_CFG_REG, 1, ®val);
regval |= SPL06_CFG_T_SHIFT;
i2c_write(SPL06_ADDR, SP06_CFG_REG, 1, ®val);
}
}
int spl06_init(pfn_i2c_read read, pfn_i2c_write write)
{
uint8_t regval = 0;
uint8_t coef[18] = {0};
/* 移植I2C通信接口函数 */
if ((read == 0) || (write == 0)) {
return -1;
}
i2c_read = read;
i2c_write = write;
regval = 0x89;
i2c_write(SPL06_ADDR, SP06_RESET, 1, ®val);
i2c_read(SPL06_ADDR, SP06_ID, 1, ®val);
if (0x10 != regval)
{
return -1;
}
delay_ms(50);
i2c_read(SPL06_ADDR, SP06_COEF, 18, coef);
_c0 = ((int16_t)coef[0] << 4) | ((coef[1] & 0xF0) >> 4);
_c0 = (_c0 & 0x0800) ? (0xF000 | _c0) : _c0;
_c1 = ((int16_t)(coef[1] & 0x0F) << 8) | coef[2];
_c1 = (_c1 & 0x0800) ? (0xF000 | _c1) : _c1;
_c00 = ((int32_t)coef[3] << 12) | ((uint32_t)coef[4] << 4 ) | (coef[5] >> 4);
_c00 = (_c00 & 0x080000) ? (0xFFF00000 | _c00) : _c00;
_c10 = ((int32_t)(coef[5] & 0x0F) << 16) | ((uint32_t)coef[6] << 8) | coef[7];
_c10 = (_c10 & 0x080000) ? (0xFFF00000 | _c10) : _c10;
_c01 = ((int16_t)coef[8] << 8) | coef[9];
_c11 = ((int16_t)coef[10] << 8) | coef[11];
_c20 = ((int16_t)coef[12] << 8) | coef[13];
_c21 = ((int16_t)coef[14] << 8) | coef[15];
_c30 = ((int16_t)coef[16] << 8) | coef[17];
_spl06_pressure_config(PM_RATE_8, PM_PRC_64);
_spl06_temperature_config(TMP_RATE_1, TMP_PRC_1);
/* 启动测量 */
regval = MEAS_CTRL_ContinuousPressTemp;
i2c_write(SPL06_ADDR, SP06_MEAS_CFG, 1, ®val);
return 0;
}
void spl06_get_raw_data(spl06_result_t *p_res)
{
uint8_t regval[3] = {0};
i2c_read(SPL06_ADDR, SP06_PSR_B2, 3, regval);
p_res->Praw = (int32_t)regval[0] << 16 | (int32_t)regval[1] << 8 | regval[2];
p_res->Praw = (p_res->Praw & 0x00800000) ? (0xFF000000 | p_res->Praw) : p_res->Praw;
i2c_read(SPL06_ADDR, SP06_TMP_B2, 3, regval);
p_res->Traw = (int32_t)regval[0] << 16 | (int32_t)regval[1] << 8 | regval[2];
p_res->Traw = (p_res->Traw & 0x00800000) ? (0xFF000000 | p_res->Traw) : p_res->Traw;
}
void spl06_get_result(spl06_result_t *p_res)
{
spl06_get_raw_data(p_res);
float Praw_sc = p_res->Praw / _kP;
float Traw_sc = p_res->Traw / _kT;
p_res->Pcomp = _c00
+ Praw_sc * (_c10 + Praw_sc * (_c20 + Praw_sc * _c30))
+ Traw_sc * _c01
+ Traw_sc * Praw_sc * (_c11 + Praw_sc * _c21);
p_res->Tcomp = _c0 * 0.5 + _c1 * Traw_sc;
}
3、main.c伪代码
#include "bsp_i2c.h"
#include "bsp_systick.h" /* 提供延时函数 */
#include "spl06.h"
int main(void)
{
spl06_result_t spl06_result;
spl06_init(i2c_read, i2c_write);
while (1)
{
spl06_get_result(&spl06_result);
delay_ms(125); /* 配置了气压计检测频率为8次/秒 */
}
}
驱动程序例程来源：SPL06_001气压计驱动例程_spl06-001气压计-CSDN博客
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