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Merge branch 'feature/support_i2c_master' into 'master'
i2c_bus: support i2c master See merge request adf/esp-adf-internal!1314
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| /* | ||
| * ESPRESSIF MIT License | ||
| * | ||
| * Copyright (c) 2024 <ESPRESSIF SYSTEMS (SHANGHAI) PTE LTD> | ||
| * | ||
| * Permission is hereby granted for use on ESPRESSIF SYSTEMS products only, in which case, | ||
| * it is free of charge, to any person obtaining a copy of this software and associated | ||
| * documentation files (the "Software"), to deal in the Software without restriction, including | ||
| * without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, | ||
| * and/or sell copies of the Software, and to permit persons to whom the Software is furnished | ||
| * to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included in all copies or | ||
| * substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | ||
| * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | ||
| * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | ||
| * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | ||
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| * | ||
| */ | ||
|
|
||
| #include <string.h> | ||
| #include "freertos/FreeRTOS.h" | ||
| #include "freertos/semphr.h" | ||
| #include <sys/queue.h> | ||
| #include "esp_log.h" | ||
| #include "esp_heap_caps.h" | ||
| #include "driver/i2c.h" | ||
| #include "audio_mutex.h" | ||
| #include "audio_mem.h" | ||
| #include "audio_error.h" | ||
| #include "i2c_bus.h" | ||
|
|
||
| #if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)) | ||
|
|
||
| static const char *TAG = "i2c_bus_v2"; | ||
|
|
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| #define I2C_BUS_CHECK(a, str, ret) if(!(a)) { \ | ||
| ESP_LOGE(TAG, "%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \ | ||
| return (ret); \ | ||
| } | ||
|
|
||
| #define I2C_BUS_PORT_CHECK_RET(port, err) do { \ | ||
| if (port < 0 || port > I2C_NUM_MAX) { \ | ||
| ESP_LOGE(TAG, "Invalid i2c port %d", port); \ | ||
| return err; \ | ||
| } \ | ||
| } while (0) | ||
|
|
||
| #define DEFAULT_I2C_TRANS_TIMEOUT (200) // default i2c transmit timeout (ms) | ||
|
|
||
| typedef struct i2c_dev_info_s { | ||
| SLIST_ENTRY(i2c_dev_info_s) next; | ||
| uint16_t dev_addr; | ||
| i2c_master_dev_handle_t dev_handle; | ||
| } i2c_dev_info_t; | ||
|
|
||
| typedef struct { | ||
| uint8_t port; | ||
| uint32_t clk; | ||
| } i2c_bus_info_t; | ||
|
|
||
| typedef struct { | ||
| i2c_master_bus_handle_t master_handle; | ||
| int ref_count; | ||
| xSemaphoreHandle bus_lock; | ||
| SLIST_HEAD( ,i2c_dev_info_s) dev_lists; | ||
| } i2c_master_info_t; | ||
|
|
||
| static i2c_master_info_t master[I2C_NUM_MAX]; | ||
|
|
||
| static i2c_master_dev_handle_t get_i2c_device_handle(i2c_bus_info_t* bus, uint16_t addr) | ||
| { | ||
| i2c_dev_info_t* dev_info = NULL; | ||
| SLIST_FOREACH(dev_info, &master[bus->port].dev_lists, next) { | ||
| if (dev_info->dev_addr == addr) { | ||
| return dev_info->dev_handle; | ||
| } | ||
| } | ||
| return NULL; | ||
| } | ||
|
|
||
| static i2c_master_dev_handle_t add_i2c_device(i2c_bus_info_t* bus, uint16_t addr) | ||
| { | ||
| i2c_dev_info_t* dev_info = audio_calloc(1, sizeof(i2c_dev_info_t)); // calloc and put to dev lists | ||
| I2C_BUS_CHECK(dev_info, "Insufficient memory", NULL); | ||
| i2c_device_config_t cfg = { | ||
| .dev_addr_length = I2C_ADDR_BIT_LEN_7, | ||
| .device_address = addr >> 1, | ||
| .scl_speed_hz = bus->clk, | ||
| }; | ||
| esp_err_t ret = i2c_master_bus_add_device(master[bus->port].master_handle, &cfg, &dev_info->dev_handle); | ||
| AUDIO_RET_ON_FALSE(TAG, ret, return NULL, "Failed to add device to bus"); | ||
| dev_info->dev_addr = addr; | ||
| SLIST_INSERT_HEAD(&master[bus->port].dev_lists, dev_info, next); | ||
| return dev_info->dev_handle; | ||
| } | ||
|
|
||
| static i2c_master_dev_handle_t try_get_i2c_device_handle(i2c_bus_info_t* bus, uint16_t addr) | ||
| { | ||
| i2c_master_dev_handle_t handle = get_i2c_device_handle(bus, addr); | ||
| if (handle) { | ||
| return handle; | ||
| } | ||
| return add_i2c_device(bus, addr); | ||
| } | ||
|
|
||
| static i2c_master_bus_handle_t i2c_master_create(i2c_port_t port, i2c_config_t *cfg) | ||
| { | ||
| esp_err_t ret = ESP_OK; | ||
| i2c_master_bus_handle_t i2c_bus_handle; | ||
| i2c_master_bus_config_t i2c_bus_config = {0}; | ||
| i2c_bus_config.clk_source = I2C_CLK_SRC_DEFAULT; | ||
| i2c_bus_config.i2c_port = port; | ||
| i2c_bus_config.scl_io_num = cfg->scl_io_num; | ||
| i2c_bus_config.sda_io_num = cfg->sda_io_num; | ||
| i2c_bus_config.glitch_ignore_cnt = 7; | ||
| i2c_bus_config.flags.enable_internal_pullup = true; | ||
| ret = i2c_new_master_bus(&i2c_bus_config, &i2c_bus_handle); | ||
| if (ret == ESP_OK) { | ||
| return i2c_bus_handle; | ||
| } | ||
| return NULL; | ||
| } | ||
|
|
||
| i2c_bus_handle_t i2c_bus_create(i2c_port_t port, i2c_config_t *conf) | ||
| { | ||
| I2C_BUS_PORT_CHECK_RET(port, NULL); | ||
| I2C_BUS_CHECK(conf != NULL, "Configuration not initialized", NULL); | ||
|
|
||
| if (master[port].master_handle == NULL) { | ||
| ESP_LOGW(TAG, "I2C master handle is NULL, will create new one"); | ||
| master[port].master_handle = i2c_master_create(port, conf); | ||
| AUDIO_MEM_CHECK(TAG, master[port].master_handle, return NULL); | ||
| } | ||
| if (master[port].bus_lock == NULL) { | ||
| master[port].bus_lock = mutex_create(); | ||
| AUDIO_MEM_CHECK(TAG, master[port].bus_lock, return NULL;); | ||
| SLIST_INIT(&master[port].dev_lists); | ||
| } | ||
| i2c_bus_info_t* bus = audio_calloc(1, sizeof(i2c_bus_info_t)); | ||
| bus->port = port; | ||
| bus->clk = conf->master.clk_speed; | ||
| __sync_fetch_and_add(&master[port].ref_count, 1); | ||
|
|
||
| return (i2c_bus_handle_t)bus; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_write_bytes(i2c_bus_handle_t bus, int addr, uint8_t *reg, int regLen, uint8_t *data, int datalen) | ||
| { | ||
| i2c_bus_info_t* bus_info = (i2c_bus_info_t*)bus; | ||
| i2c_master_dev_handle_t dev_handle = try_get_i2c_device_handle(bus, addr); | ||
| I2C_BUS_CHECK(dev_handle != NULL, "I2C device handle is NULL", ESP_FAIL); | ||
|
|
||
| int write_len = regLen + datalen; | ||
| uint8_t *write_buffer = (uint8_t*)audio_calloc(1, write_len); | ||
| AUDIO_MEM_CHECK(TAG, write_buffer, return ESP_FAIL); | ||
|
|
||
| memcpy(write_buffer, reg, regLen); | ||
| memcpy(write_buffer + regLen, data, datalen); | ||
| mutex_lock(master[bus_info->port].bus_lock); | ||
| int ret = i2c_master_transmit(dev_handle, write_buffer, write_len, pdMS_TO_TICKS(DEFAULT_I2C_TRANS_TIMEOUT)); | ||
| mutex_unlock(master[bus_info->port].bus_lock); | ||
| AUDIO_RET_ON_FALSE(TAG, ret, {audio_free(write_buffer); return ESP_FAIL;}, "I2C bus write bytes failed"); | ||
| audio_free(write_buffer); | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_set_master_handle(i2c_port_t port, i2c_master_bus_handle_t master_handle) | ||
| { | ||
| I2C_BUS_PORT_CHECK_RET(port, ESP_ERR_INVALID_ARG); | ||
| master[port].master_handle = master_handle; | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| i2c_master_bus_handle_t i2c_bus_get_master_handle(i2c_port_t port) | ||
| { | ||
| I2C_BUS_PORT_CHECK_RET(port, NULL); | ||
| i2c_master_bus_handle_t bus = master[port].master_handle; | ||
| return bus; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_write_data(i2c_bus_handle_t bus, int addr, uint8_t *data, int datalen) | ||
| { | ||
| i2c_bus_info_t *bus_info = (i2c_bus_info_t *)bus; | ||
| i2c_master_dev_handle_t dev_handle = try_get_i2c_device_handle(bus, addr); | ||
| I2C_BUS_CHECK(dev_handle != NULL, "I2C device handle is NULL", ESP_FAIL); | ||
|
|
||
| mutex_lock(master[bus_info->port].bus_lock); | ||
| esp_err_t ret = i2c_master_transmit(dev_handle, data, datalen, pdMS_TO_TICKS(DEFAULT_I2C_TRANS_TIMEOUT)); | ||
| mutex_unlock(master[bus_info->port].bus_lock); | ||
| AUDIO_RET_ON_FALSE(TAG, ret, {return ESP_FAIL;}, "I2C bus write bytes failed"); | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_read_bytes(i2c_bus_handle_t bus, int addr, uint8_t *reg, int reglen, uint8_t *outdata, int datalen) | ||
| { | ||
| i2c_bus_info_t *bus_info = (i2c_bus_info_t *)bus; | ||
| i2c_master_dev_handle_t dev_handle = try_get_i2c_device_handle(bus, addr); | ||
| I2C_BUS_CHECK(dev_handle != NULL, "I2C device handle is NULL", ESP_FAIL); | ||
|
|
||
| mutex_lock(master[bus_info->port].bus_lock); | ||
| esp_err_t ret = i2c_master_transmit_receive(dev_handle, reg, reglen, outdata, datalen, pdMS_TO_TICKS(DEFAULT_I2C_TRANS_TIMEOUT)); | ||
| mutex_unlock(master[bus_info->port].bus_lock); | ||
| AUDIO_RET_ON_FALSE(TAG, ret, {return ESP_FAIL;}, "I2C bus read bytes failed"); | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_read_bytes_directly(i2c_bus_handle_t bus, int addr, uint8_t *outdata, int datalen) | ||
| { | ||
| i2c_bus_info_t *bus_info = (i2c_bus_info_t *)bus; | ||
| i2c_master_dev_handle_t dev_handle = try_get_i2c_device_handle(bus, addr); | ||
| I2C_BUS_CHECK(dev_handle != NULL, "I2C device handle is NULL", ESP_FAIL); | ||
|
|
||
| mutex_lock(master[bus_info->port].bus_lock); | ||
| esp_err_t ret = i2c_master_receive(dev_handle, outdata, datalen, pdMS_TO_TICKS(DEFAULT_I2C_TRANS_TIMEOUT)); | ||
| mutex_unlock(master[bus_info->port].bus_lock); | ||
| AUDIO_RET_ON_FALSE(TAG, ret, {return ESP_FAIL;}, "I2C bus read bytes failed"); | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_delete(i2c_bus_handle_t bus) | ||
| { | ||
| i2c_bus_info_t *bus_info = (i2c_bus_info_t *)bus; | ||
| audio_free(bus_info); | ||
| __sync_fetch_and_sub(&master[bus_info->port].ref_count, 1); | ||
| if (master[bus_info->port].ref_count == 0) { | ||
| mutex_destroy(master[bus_info->port].bus_lock); | ||
| master[bus_info->port].bus_lock = NULL; | ||
| audio_free(bus); | ||
| } | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_probe_addr(i2c_bus_handle_t bus, uint8_t addr) | ||
| { | ||
| i2c_bus_info_t *bus_info = (i2c_bus_info_t *)bus; | ||
| esp_err_t ret = ESP_OK; | ||
| mutex_lock(master[bus_info->port].bus_lock); | ||
| ret = i2c_master_probe(master[bus_info->port].master_handle, addr, pdMS_TO_TICKS(DEFAULT_I2C_TRANS_TIMEOUT)); | ||
| mutex_unlock(master[bus_info->port].bus_lock); | ||
| return ret; | ||
| } | ||
|
|
||
| esp_err_t i2c_bus_run_cb(i2c_bus_handle_t bus, i2c_run_cb_t cb, void *arg) | ||
| { | ||
| I2C_BUS_CHECK(bus != NULL, "Handle error", ESP_FAIL); | ||
| I2C_BUS_CHECK(cb != NULL, "Invalid callback", ESP_FAIL); | ||
|
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| i2c_bus_info_t *bus_info = (i2c_bus_info_t *)bus; | ||
| mutex_lock(master[bus_info->port].bus_lock); | ||
| (*cb)(bus_info->port, arg); | ||
| mutex_unlock(master[bus_info->port].bus_lock); | ||
| return ESP_OK; | ||
| } | ||
|
|
||
| #endif /* ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0) */ |
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