Sun, 16 Apr 2023 12:27:12 +0200
Preparations for BLE GATT. Added extra time after INA219 is powered on before measurement. Reduced LEDC frequency to 60 Hz, that makes the LED lights less nervous. Hardware mod on output 4, now needs external pulldown resistor.
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1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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parents:
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1 | /* |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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2 | * The MIT License (MIT) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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3 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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4 | * Copyright (c) 2018 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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parents:
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5 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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7 | * of this software and associated documentation files (the "Software"), to deal |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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8 | * in the Software without restriction, including without limitation the rights |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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10 | * copies of the Software, and to permit persons to whom the Software is |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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11 | * furnished to do so, subject to the following conditions: |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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12 | * The above copyright notice and this permission notice shall be included in all |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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13 | * copies or substantial portions of the Software. |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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14 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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21 | * SOFTWARE. |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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22 | */ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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23 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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24 | /** |
1c9894662795
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25 | * @file i2cdev.c |
1c9894662795
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26 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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27 | * ESP-IDF I2C master thread-safe functions for communication with I2C slave |
1c9894662795
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28 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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29 | * Copyright (c) 2018 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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30 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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31 | * MIT Licensed as described in the file LICENSE |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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32 | */ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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33 | #include <string.h> |
1c9894662795
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34 | #include <inttypes.h> |
1c9894662795
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35 | #include <freertos/FreeRTOS.h> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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36 | #include <freertos/task.h> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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37 | #include <esp_log.h> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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38 | #include "i2cdev.h" |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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39 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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40 | static const char *TAG = "i2cdev"; |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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41 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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42 | typedef struct { |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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43 | SemaphoreHandle_t lock; |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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44 | i2c_config_t config; |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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45 | bool installed; |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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46 | } i2c_port_state_t; |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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47 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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48 | static i2c_port_state_t states[I2C_NUM_MAX]; |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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49 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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50 | #if CONFIG_I2CDEV_NOLOCK |
1c9894662795
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51 | #define SEMAPHORE_TAKE(port) |
1c9894662795
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52 | #else |
1c9894662795
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53 | #define SEMAPHORE_TAKE(port) do { \ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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54 | if (!xSemaphoreTake(states[port].lock, pdMS_TO_TICKS(CONFIG_I2CDEV_TIMEOUT))) \ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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55 | { \ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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56 | ESP_LOGE(TAG, "Could not take port mutex %d", port); \ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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57 | return ESP_ERR_TIMEOUT; \ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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58 | } \ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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59 | } while (0) |
1c9894662795
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60 | #endif |
1c9894662795
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61 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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62 | #if CONFIG_I2CDEV_NOLOCK |
1c9894662795
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63 | #define SEMAPHORE_GIVE(port) |
1c9894662795
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64 | #else |
1c9894662795
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65 | #define SEMAPHORE_GIVE(port) do { \ |
1c9894662795
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66 | if (!xSemaphoreGive(states[port].lock)) \ |
1c9894662795
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67 | { \ |
1c9894662795
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68 | ESP_LOGE(TAG, "Could not give port mutex %d", port); \ |
1c9894662795
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69 | return ESP_FAIL; \ |
1c9894662795
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70 | } \ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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71 | } while (0) |
1c9894662795
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72 | #endif |
1c9894662795
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73 | |
1c9894662795
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74 | esp_err_t i2cdev_init() |
1c9894662795
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75 | { |
1c9894662795
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76 | memset(states, 0, sizeof(states)); |
1c9894662795
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77 | |
1c9894662795
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78 | #if !CONFIG_I2CDEV_NOLOCK |
1c9894662795
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79 | for (int i = 0; i < I2C_NUM_MAX; i++) |
1c9894662795
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80 | { |
1c9894662795
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81 | states[i].lock = xSemaphoreCreateMutex(); |
1c9894662795
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82 | if (!states[i].lock) |
1c9894662795
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83 | { |
1c9894662795
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84 | ESP_LOGE(TAG, "Could not create port mutex %d", i); |
1c9894662795
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85 | return ESP_FAIL; |
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86 | } |
1c9894662795
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87 | } |
1c9894662795
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88 | #endif |
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89 | |
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90 | return ESP_OK; |
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91 | } |
1c9894662795
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92 | |
1c9894662795
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93 | esp_err_t i2cdev_done() |
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94 | { |
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95 | for (int i = 0; i < I2C_NUM_MAX; i++) |
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96 | { |
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97 | if (!states[i].lock) continue; |
1c9894662795
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98 | |
1c9894662795
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99 | if (states[i].installed) |
1c9894662795
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100 | { |
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101 | SEMAPHORE_TAKE(i); |
1c9894662795
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102 | i2c_driver_delete(i); |
1c9894662795
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103 | states[i].installed = false; |
1c9894662795
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104 | SEMAPHORE_GIVE(i); |
1c9894662795
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105 | } |
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106 | #if !CONFIG_I2CDEV_NOLOCK |
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107 | vSemaphoreDelete(states[i].lock); |
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108 | #endif |
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109 | states[i].lock = NULL; |
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110 | } |
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111 | return ESP_OK; |
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112 | } |
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113 | |
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114 | esp_err_t i2c_dev_create_mutex(i2c_dev_t *dev) |
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115 | { |
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116 | #if !CONFIG_I2CDEV_NOLOCK |
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117 | if (!dev) return ESP_ERR_INVALID_ARG; |
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118 | |
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119 | ESP_LOGV(TAG, "[0x%02x at %d] creating mutex", dev->addr, dev->port); |
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120 | |
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121 | dev->mutex = xSemaphoreCreateMutex(); |
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122 | if (!dev->mutex) |
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123 | { |
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124 | ESP_LOGE(TAG, "[0x%02x at %d] Could not create device mutex", dev->addr, dev->port); |
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125 | return ESP_FAIL; |
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126 | } |
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127 | #endif |
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128 | |
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129 | return ESP_OK; |
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130 | } |
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131 | |
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132 | esp_err_t i2c_dev_delete_mutex(i2c_dev_t *dev) |
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133 | { |
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134 | #if !CONFIG_I2CDEV_NOLOCK |
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135 | if (!dev) return ESP_ERR_INVALID_ARG; |
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136 | |
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137 | ESP_LOGV(TAG, "[0x%02x at %d] deleting mutex", dev->addr, dev->port); |
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138 | |
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139 | vSemaphoreDelete(dev->mutex); |
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140 | #endif |
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141 | return ESP_OK; |
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142 | } |
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143 | |
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144 | esp_err_t i2c_dev_take_mutex(i2c_dev_t *dev) |
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145 | { |
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146 | #if !CONFIG_I2CDEV_NOLOCK |
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147 | if (!dev) return ESP_ERR_INVALID_ARG; |
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148 | |
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149 | ESP_LOGV(TAG, "[0x%02x at %d] taking mutex", dev->addr, dev->port); |
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150 | |
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151 | if (!xSemaphoreTake(dev->mutex, pdMS_TO_TICKS(CONFIG_I2CDEV_TIMEOUT))) |
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152 | { |
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153 | ESP_LOGE(TAG, "[0x%02x at %d] Could not take device mutex", dev->addr, dev->port); |
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154 | return ESP_ERR_TIMEOUT; |
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155 | } |
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156 | #endif |
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157 | return ESP_OK; |
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158 | } |
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159 | |
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160 | esp_err_t i2c_dev_give_mutex(i2c_dev_t *dev) |
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161 | { |
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162 | #if !CONFIG_I2CDEV_NOLOCK |
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163 | if (!dev) return ESP_ERR_INVALID_ARG; |
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164 | |
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165 | ESP_LOGV(TAG, "[0x%02x at %d] giving mutex", dev->addr, dev->port); |
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166 | |
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167 | if (!xSemaphoreGive(dev->mutex)) |
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168 | { |
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169 | ESP_LOGE(TAG, "[0x%02x at %d] Could not give device mutex", dev->addr, dev->port); |
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170 | return ESP_FAIL; |
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171 | } |
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172 | #endif |
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173 | return ESP_OK; |
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174 | } |
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175 | |
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176 | inline static bool cfg_equal(const i2c_config_t *a, const i2c_config_t *b) |
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177 | { |
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178 | return a->scl_io_num == b->scl_io_num |
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179 | && a->sda_io_num == b->sda_io_num |
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180 | #if HELPER_TARGET_IS_ESP32 |
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181 | && a->master.clk_speed == b->master.clk_speed |
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182 | #elif HELPER_TARGET_IS_ESP8266 |
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183 | && a->clk_stretch_tick == b->clk_stretch_tick |
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184 | #endif |
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185 | && a->scl_pullup_en == b->scl_pullup_en |
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186 | && a->sda_pullup_en == b->sda_pullup_en; |
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187 | } |
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188 | |
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189 | static esp_err_t i2c_setup_port(const i2c_dev_t *dev) |
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190 | { |
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191 | if (dev->port >= I2C_NUM_MAX) return ESP_ERR_INVALID_ARG; |
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192 | |
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193 | esp_err_t res; |
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194 | if (!cfg_equal(&dev->cfg, &states[dev->port].config) || !states[dev->port].installed) |
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195 | { |
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196 | ESP_LOGD(TAG, "Reconfiguring I2C driver on port %d", dev->port); |
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197 | i2c_config_t temp; |
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198 | memcpy(&temp, &dev->cfg, sizeof(i2c_config_t)); |
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199 | temp.mode = I2C_MODE_MASTER; |
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200 | |
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201 | // Driver reinstallation |
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202 | if (states[dev->port].installed) |
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203 | { |
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204 | i2c_driver_delete(dev->port); |
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205 | states[dev->port].installed = false; |
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206 | } |
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207 | #if HELPER_TARGET_IS_ESP32 |
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208 | #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 1, 0) |
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209 | // See https://github.com/espressif/esp-idf/issues/10163 |
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210 | if ((res = i2c_driver_install(dev->port, temp.mode, 0, 0, 0)) != ESP_OK) |
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211 | return res; |
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212 | if ((res = i2c_param_config(dev->port, &temp)) != ESP_OK) |
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213 | return res; |
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214 | #else |
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215 | if ((res = i2c_param_config(dev->port, &temp)) != ESP_OK) |
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216 | return res; |
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217 | if ((res = i2c_driver_install(dev->port, temp.mode, 0, 0, 0)) != ESP_OK) |
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218 | return res; |
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219 | #endif |
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220 | #endif |
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221 | #if HELPER_TARGET_IS_ESP8266 |
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222 | // Clock Stretch time, depending on CPU frequency |
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223 | temp.clk_stretch_tick = dev->timeout_ticks ? dev->timeout_ticks : I2CDEV_MAX_STRETCH_TIME; |
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224 | if ((res = i2c_driver_install(dev->port, temp.mode)) != ESP_OK) |
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225 | return res; |
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226 | if ((res = i2c_param_config(dev->port, &temp)) != ESP_OK) |
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227 | return res; |
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228 | #endif |
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229 | states[dev->port].installed = true; |
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230 | |
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231 | memcpy(&states[dev->port].config, &temp, sizeof(i2c_config_t)); |
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232 | ESP_LOGD(TAG, "I2C driver successfully reconfigured on port %d", dev->port); |
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233 | } |
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234 | #if HELPER_TARGET_IS_ESP32 |
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235 | int t; |
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236 | if ((res = i2c_get_timeout(dev->port, &t)) != ESP_OK) |
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237 | return res; |
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238 | // Timeout cannot be 0 |
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239 | uint32_t ticks = dev->timeout_ticks ? dev->timeout_ticks : I2CDEV_MAX_STRETCH_TIME; |
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240 | if ((ticks != t) && (res = i2c_set_timeout(dev->port, ticks)) != ESP_OK) |
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241 | return res; |
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242 | ESP_LOGD(TAG, "Timeout: ticks = %" PRIu32 " (%" PRIu32 " usec) on port %d", dev->timeout_ticks, dev->timeout_ticks / 80, dev->port); |
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243 | #endif |
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244 | |
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245 | return ESP_OK; |
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246 | } |
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247 | |
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248 | esp_err_t i2c_dev_probe(const i2c_dev_t *dev, i2c_dev_type_t operation_type) |
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249 | { |
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250 | if (!dev) return ESP_ERR_INVALID_ARG; |
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251 | |
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252 | SEMAPHORE_TAKE(dev->port); |
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253 | |
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254 | esp_err_t res = i2c_setup_port(dev); |
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255 | if (res == ESP_OK) |
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256 | { |
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257 | i2c_cmd_handle_t cmd = i2c_cmd_link_create(); |
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258 | i2c_master_start(cmd); |
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259 | i2c_master_write_byte(cmd, dev->addr << 1 | (operation_type == I2C_DEV_READ ? 1 : 0), true); |
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260 | i2c_master_stop(cmd); |
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261 | |
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262 | res = i2c_master_cmd_begin(dev->port, cmd, pdMS_TO_TICKS(CONFIG_I2CDEV_TIMEOUT)); |
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263 | |
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264 | i2c_cmd_link_delete(cmd); |
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265 | } |
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266 | |
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267 | SEMAPHORE_GIVE(dev->port); |
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268 | |
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269 | return res; |
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270 | } |
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271 | |
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272 | esp_err_t i2c_dev_read(const i2c_dev_t *dev, const void *out_data, size_t out_size, void *in_data, size_t in_size) |
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273 | { |
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274 | if (!dev || !in_data || !in_size) return ESP_ERR_INVALID_ARG; |
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275 | |
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276 | SEMAPHORE_TAKE(dev->port); |
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277 | |
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278 | esp_err_t res = i2c_setup_port(dev); |
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279 | if (res == ESP_OK) |
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280 | { |
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281 | i2c_cmd_handle_t cmd = i2c_cmd_link_create(); |
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282 | if (out_data && out_size) |
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283 | { |
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284 | i2c_master_start(cmd); |
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285 | i2c_master_write_byte(cmd, dev->addr << 1, true); |
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286 | i2c_master_write(cmd, (void *)out_data, out_size, true); |
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287 | } |
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288 | i2c_master_start(cmd); |
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289 | i2c_master_write_byte(cmd, (dev->addr << 1) | 1, true); |
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290 | i2c_master_read(cmd, in_data, in_size, I2C_MASTER_LAST_NACK); |
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291 | i2c_master_stop(cmd); |
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292 | |
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293 | res = i2c_master_cmd_begin(dev->port, cmd, pdMS_TO_TICKS(CONFIG_I2CDEV_TIMEOUT)); |
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294 | if (res != ESP_OK) |
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295 | ESP_LOGE(TAG, "Could not read from device [0x%02x at %d]: %d (%s)", dev->addr, dev->port, res, esp_err_to_name(res)); |
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296 | |
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297 | i2c_cmd_link_delete(cmd); |
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298 | } |
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299 | |
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300 | SEMAPHORE_GIVE(dev->port); |
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301 | return res; |
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302 | } |
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303 | |
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304 | esp_err_t i2c_dev_write(const i2c_dev_t *dev, const void *out_reg, size_t out_reg_size, const void *out_data, size_t out_size) |
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305 | { |
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306 | if (!dev || !out_data || !out_size) return ESP_ERR_INVALID_ARG; |
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307 | |
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308 | SEMAPHORE_TAKE(dev->port); |
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309 | |
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310 | esp_err_t res = i2c_setup_port(dev); |
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311 | if (res == ESP_OK) |
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312 | { |
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313 | i2c_cmd_handle_t cmd = i2c_cmd_link_create(); |
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314 | i2c_master_start(cmd); |
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315 | i2c_master_write_byte(cmd, dev->addr << 1, true); |
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316 | if (out_reg && out_reg_size) |
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317 | i2c_master_write(cmd, (void *)out_reg, out_reg_size, true); |
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318 | i2c_master_write(cmd, (void *)out_data, out_size, true); |
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319 | i2c_master_stop(cmd); |
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320 | res = i2c_master_cmd_begin(dev->port, cmd, pdMS_TO_TICKS(CONFIG_I2CDEV_TIMEOUT)); |
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321 | if (res != ESP_OK) |
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322 | ESP_LOGE(TAG, "Could not write to device [0x%02x at %d]: %d (%s)", dev->addr, dev->port, res, esp_err_to_name(res)); |
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323 | i2c_cmd_link_delete(cmd); |
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324 | } |
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325 | |
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326 | SEMAPHORE_GIVE(dev->port); |
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327 | return res; |
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328 | } |
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329 | |
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330 | esp_err_t i2c_dev_read_reg(const i2c_dev_t *dev, uint8_t reg, void *in_data, size_t in_size) |
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331 | { |
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332 | return i2c_dev_read(dev, ®, 1, in_data, in_size); |
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333 | } |
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334 | |
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335 | esp_err_t i2c_dev_write_reg(const i2c_dev_t *dev, uint8_t reg, const void *out_data, size_t out_size) |
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336 | { |
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337 | return i2c_dev_write(dev, ®, 1, out_data, out_size); |
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338 | } |