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esp-idf/examples/system/ulp_riscv/i2c/main/bmp180_defs.h

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ulp: Added support for RTC I2C driver for ULP RISC-V on esp32s2 and esp32s3 This commit adds support for using the RTC I2C peripheral on the ULP RISC-V core for esp32s2 and esp32s3. It also adds an example to demonstrate the usage of the RTC I2C peripheral. This commit also modifies the rtc_i2c register structure files to enable the use of bitfields in the ULP RISC-V RTC I2C driver.
2022-08-09 09:46:14 -04:00
/*
* SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Unlicense OR CC0-1.0
*/
#pragma once
/***************************************************
* BMP180 Register Addresses
***************************************************/
#define BMP180_SENSOR_I2C_ADDR 0x77
#define BMP180_SENSOR_REG_ADDR_WHO_AM_I 0xD0
#define BMP180_SENSOR_REG_ADDR_SOFT_RESET 0xE0
#define BMP180_SENSOR_REG_ADDR_AC1_MSB 0xAA
#define BMP180_SENSOR_REG_ADDR_AC1_LSB 0xAB
#define BMP180_SENSOR_REG_ADDR_AC2_MSB 0xAC
#define BMP180_SENSOR_REG_ADDR_AC2_LSB 0xAD
#define BMP180_SENSOR_REG_ADDR_AC3_MSB 0xAE
#define BMP180_SENSOR_REG_ADDR_AC3_LSB 0xAF
#define BMP180_SENSOR_REG_ADDR_AC4_MSB 0xB0
#define BMP180_SENSOR_REG_ADDR_AC4_LSB 0xB1
#define BMP180_SENSOR_REG_ADDR_AC5_MSB 0xB2
#define BMP180_SENSOR_REG_ADDR_AC5_LSB 0xB3
#define BMP180_SENSOR_REG_ADDR_AC6_MSB 0xB4
#define BMP180_SENSOR_REG_ADDR_AC6_LSB 0xB5
#define BMP180_SENSOR_REG_ADDR_B1_MSB 0xB6
#define BMP180_SENSOR_REG_ADDR_B1_LSB 0xB7
#define BMP180_SENSOR_REG_ADDR_B2_MSB 0xB8
#define BMP180_SENSOR_REG_ADDR_B2_LSB 0xB9
#define BMP180_SENSOR_REG_ADDR_MB_MSB 0xBA
#define BMP180_SENSOR_REG_ADDR_MB_LSB 0xBB
#define BMP180_SENSOR_REG_ADDR_MC_MSB 0xBC
#define BMP180_SENSOR_REG_ADDR_MC_LSB 0xBD
#define BMP180_SENSOR_REG_ADDR_MD_MSB 0xBE
#define BMP180_SENSOR_REG_ADDR_MD_LSB 0xBF
#define BMP180_SENSOR_REG_ADDR_CTRL_REG 0xF4
#define BMP180_SENSOR_REG_ADDR_SENSOR_DATA_MSB 0xF6
#define BMP180_SENSOR_REG_ADDR_SENSOR_DATA_LSB 0xF7
#define BMP180_SENSOR_REG_ADDR_SENSOR_DATA_XLSB 0xF8
/***************************************************
* BMP180 Control Commands
***************************************************/
#define BMP180_SENSOR_CMD_READ_TEMPERATURE 0x2E
#define BMP180_SENSOR_CMD_READ_PRESSURE_OSS_0 0x34
#define BMP180_SENSOR_CMD_READ_PRESSURE_OSS_1 0x74
#define BMP180_SENSOR_CMD_READ_PRESSURE_OSS_2 0xB4
#define BMP180_SENSOR_CMD_READ_PRESSURE_OSS_3 0xF4
#define BMP180_SENSOR_CMD_SOFT_RESET 0xB6
/***************************************************
* BMP180 Chip ID
***************************************************/
#define BMP180_SENSOR_CHIP_ID 0x55
/***************************************************
* BMP180 Calibration Data
***************************************************/
typedef struct {
int16_t ac1;
int16_t ac2;
int16_t ac3;
uint16_t ac4;
uint16_t ac5;
uint16_t ac6;
int16_t b1;
int16_t b2;
int16_t mb;
int16_t mc;
int16_t md;
} bmp180_cal_data_t;
bmp180_cal_data_t bmp180_cal_data;
/***************************************************
* BMP180 Oversampling setting to measure pressure
***************************************************/
typedef enum {
OSS_0 = 0, // Ultra low power
OSS_1 = 1, // Standard
OSS_2 = 2, // High resolution
OSS_3 = 3 // Ultra high resolution
} oss_mode_t;
/***************************************************
* BMP180 Interaction APIs
***************************************************/
static void bmp180_read_cal_data(void); // Read cal data
static void bmp180_read_ut_data(int16_t *ut_data); // Read uncompensated temperature
static void bmp180_read_up_data(int32_t *up_data, oss_mode_t oss_mode); // Read uncompensated pressure
/************************************************
* BMP180 Utility APIs
************************************************/
static void bmp180_read16(uint16_t *data_out, uint32_t reg_msb, uint32_t reg_lsb);
static int32_t bmp180_calculate_real_temp(int32_t ut_data);
static int32_t bmp180_calculate_real_pressure(int32_t up_data, int32_t ut_data, oss_mode_t oss_mode);
/************************************************
* Pressure measurement mode
************************************************/
#define EXAMPLE_OSS_MODE OSS_0
/************************************************
* Temperature and Pressure thresholds (uncompensated) to wake up Main CPU
ulp-riscv: ULP RISC-V I2C example gets stuck on esp32s2 This commit fixes an issue where in the ULP RISC-V I2C example causes a spurious wakeup of the main CPU because of a Trap signal when the ULP core does not meet the wakeup threshold values. This was due to the fact that the RTC_CNTL_COCPU_DONE signal was being set before the RTC_CNTL_COCPU_SHUT_RESET_EN signal which was causing the the ULP RISC-V core to not reset properly on each cycle. Closes https://github.com/espressif/esp-idf/issues/10301
2022-12-06 02:20:40 -05:00
* The threshold values have been selected for demo purposes and may not
ulp: Added support for RTC I2C driver for ULP RISC-V on esp32s2 and esp32s3 This commit adds support for using the RTC I2C peripheral on the ULP RISC-V core for esp32s2 and esp32s3. It also adds an example to demonstrate the usage of the RTC I2C peripheral. This commit also modifies the rtc_i2c register structure files to enable the use of bitfields in the ULP RISC-V RTC I2C driver.
2022-08-09 09:46:14 -04:00
* represent real world use case.
************************************************/
ulp-riscv: ULP RISC-V I2C example gets stuck on esp32s2 This commit fixes an issue where in the ULP RISC-V I2C example causes a spurious wakeup of the main CPU because of a Trap signal when the ULP core does not meet the wakeup threshold values. This was due to the fact that the RTC_CNTL_COCPU_DONE signal was being set before the RTC_CNTL_COCPU_SHUT_RESET_EN signal which was causing the the ULP RISC-V core to not reset properly on each cycle. Closes https://github.com/espressif/esp-idf/issues/10301
2022-12-06 02:20:40 -05:00
#define EXAMPLE_UT_THRESHOLD 25000
#define EXAMPLE_UP_THRESHOLD 50000
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