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* Add support for TMP102 temperature sensor. * Add support for STTS22H Temperature sensor. * Add AS621x (AS6212/AS6214/AS6128) temperature sensor support. * Add AHT1x sensor support. * Update I2C initialization timings. * Skip 1-wire initialization if any device using phantom power.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| /* i2c_as621x.c | ||
| Copyright (C) 2024 Timo Kokkonen <[email protected]> | ||
| SPDX-License-Identifier: GPL-3.0-or-later | ||
| This file is part of FanPico. | ||
| FanPico is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| FanPico is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with FanPico. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
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| #include <stdio.h> | ||
| #include <string.h> | ||
| #include <stdlib.h> | ||
| #include "pico/stdlib.h" | ||
| #include "hardware/gpio.h" | ||
| #include "hardware/i2c.h" | ||
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| #include "i2c.h" | ||
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| /* AS621x (AS6212/AS6214/AS6128) Registers */ | ||
| #define REG_TVAL 0x00 | ||
| #define REG_CONFIG 0x01 | ||
| #define REG_T_LOW 0x02 | ||
| #define REG_T_HIGH 0x03 | ||
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| #define AS621X_DEVICE_ID 0x117 | ||
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| typedef struct as621x_context_t { | ||
| i2c_inst_t *i2c; | ||
| uint8_t addr; | ||
| } as621x_context_t; | ||
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| void* as621x_init(i2c_inst_t *i2c, uint8_t addr) | ||
| { | ||
| int res; | ||
| uint16_t val = 0; | ||
| int16_t temp; | ||
| as621x_context_t *ctx = calloc(1, sizeof(as621x_context_t)); | ||
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| if (!ctx) | ||
| return NULL; | ||
| ctx->i2c = i2c; | ||
| ctx->addr = addr; | ||
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| /* Check that configuration register reserved bits are set as expected for AS621x */ | ||
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| res = i2c_read_register_u16(i2c, addr, REG_CONFIG, &val); | ||
| if (res || (val & 0x601f) != 0x4000) | ||
| goto panic; | ||
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| /* Try to detect device by T_HIGH and T_LOW register default values (80C and 75C) */ | ||
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| res = i2c_read_register_u16(i2c, addr, REG_T_HIGH, &val); | ||
| if (res) | ||
| goto panic; | ||
| temp = (int16_t)val / 128; | ||
| DEBUG_PRINT("T_high = %d\n", temp); | ||
| if (temp != 80) | ||
| goto panic; | ||
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| res = i2c_read_register_u16(i2c, addr, REG_T_LOW, &val); | ||
| if (res) | ||
| goto panic; | ||
| temp = (int16_t)val / 128; | ||
| DEBUG_PRINT("T_low = %d\n", temp); | ||
| if (temp != 75) | ||
| goto panic; | ||
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| /* Set sensor configuration: continuous measruements at 4Hz */ | ||
| res = i2c_write_register_u16(i2c, addr, REG_CONFIG, 0x00a0); | ||
| if (res) | ||
| goto panic; | ||
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| sleep_us(100); | ||
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| /* Read configuration register */ | ||
| res = i2c_read_register_u16(i2c, addr, REG_CONFIG, &val); | ||
| if (res) | ||
| goto panic; | ||
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| /* Check that confuration is now as expected (excluding read-only reserved bits)... */ | ||
| if ((val & 0x9fe0) != 0x00a0) | ||
| goto panic; | ||
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| return ctx; | ||
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| panic: | ||
| free(ctx); | ||
| return NULL; | ||
| } | ||
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| int as621x_start_measurement(void *ctx) | ||
| { | ||
| /* Nothing to do, sensor is in continuous measurement mode... */ | ||
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| return 250; /* measurement should be available after 250ms */ | ||
| } | ||
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| int as621x_get_measurement(void *ctx, float *temp, float *pressure, float *humidity) | ||
| { | ||
| as621x_context_t *c = (as621x_context_t*)ctx; | ||
| int res; | ||
| uint16_t val; | ||
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| /* Get Measurement */ | ||
| res = i2c_read_register_u16(c->i2c, c->addr, REG_TVAL, &val); | ||
| if (res) | ||
| return -2; | ||
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| *temp = ((int16_t)val) / 128.0; | ||
| DEBUG_PRINT("t_raw = %d, temp=%0.2f\n", val, *temp); | ||
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| *pressure = -1.0; | ||
| *humidity = -1.0; | ||
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| return 0; | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| /* i2c_stts22h.c | ||
| Copyright (C) 2024 Timo Kokkonen <[email protected]> | ||
| SPDX-License-Identifier: GPL-3.0-or-later | ||
| This file is part of FanPico. | ||
| FanPico is free software: you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation, either version 3 of the License, or | ||
| (at your option) any later version. | ||
| FanPico is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with FanPico. If not, see <https://www.gnu.org/licenses/>. | ||
| */ | ||
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| #include <stdio.h> | ||
| #include <string.h> | ||
| #include <stdlib.h> | ||
| #include "pico/stdlib.h" | ||
| #include "hardware/gpio.h" | ||
| #include "hardware/i2c.h" | ||
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| #include "i2c.h" | ||
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| /* STTS22H Registers */ | ||
| #define REG_DEVICE_ID 0x01 | ||
| #define REG_TEMP_H_LIMIT 0x02 | ||
| #define REG_TEMP_L_LIMIT 0x03 | ||
| #define REG_CTRL 0x04 | ||
| #define REG_STATUS 0x05 | ||
| #define REG_TEMP_L_OUT 0x06 | ||
| #define REG_TEMP_H_OUT 0x07 | ||
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| #define STTS22H_DEVICE_ID 0xa0 | ||
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| typedef struct stts22h_context_t { | ||
| i2c_inst_t *i2c; | ||
| uint8_t addr; | ||
| } stts22h_context_t; | ||
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| void* stts22h_init(i2c_inst_t *i2c, uint8_t addr) | ||
| { | ||
| int res; | ||
| uint8_t val = 0; | ||
| stts22h_context_t *ctx = calloc(1, sizeof(stts22h_context_t)); | ||
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| if (!ctx) | ||
| return NULL; | ||
| ctx->i2c = i2c; | ||
| ctx->addr = addr; | ||
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| /* Read and verify device ID */ | ||
| res = i2c_read_register_u8(i2c, addr, REG_DEVICE_ID, &val); | ||
| if (res || val != STTS22H_DEVICE_ID) | ||
| goto panic; | ||
|
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| /* Configure Sensor: set to defaults first */ | ||
| res = i2c_write_register_u8(i2c, addr, REG_CTRL, 0x00); | ||
| if (res) | ||
| goto panic; | ||
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| sleep_us(10); | ||
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| /* Configure Sensor: avg=00, if_add_inc=1, freerun=1 */ | ||
| res = i2c_write_register_u8(i2c, addr, REG_CTRL, 0x0c); | ||
| if (res) | ||
| goto panic; | ||
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| /* Read and check configuration register */ | ||
| res = i2c_read_register_u8(i2c, addr, REG_CTRL, &val); | ||
| if (res | (val != 0x0c)) | ||
| goto panic; | ||
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| return ctx; | ||
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| panic: | ||
| free(ctx); | ||
| return NULL; | ||
| } | ||
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| int stts22h_start_measurement(void *ctx) | ||
| { | ||
| /* Nothing to do, sensor is in continuous measurement mode... */ | ||
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| return 50; /* measurement should be available after 40ms (25Hz) */ | ||
| } | ||
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| int stts22h_get_measurement(void *ctx, float *temp, float *pressure, float *humidity) | ||
| { | ||
| stts22h_context_t *c = (stts22h_context_t*)ctx; | ||
| int res; | ||
| uint16_t val; | ||
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| /* Get Measurement */ | ||
| res = i2c_read_register_u16(c->i2c, c->addr, REG_TEMP_L_OUT, &val); | ||
| if (res) | ||
| return -2; | ||
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| val = (val << 8) | (val >> 8); /* reverse byte order */ | ||
| *temp = ((int16_t)val) / 100.0; | ||
| *pressure = -1.0; | ||
| *humidity = -1.0; | ||
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| DEBUG_PRINT("raw_temp=%d, temp=%0.2f\n", val, *temp); | ||
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| return 0; | ||
| } | ||
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