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source i2c_manager files from https://github.com/ropg/i2c_manager master

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This commit is contained in:
hiruna 2023-05-27 13:00:33 +10:00
parent 785b7d5c28
commit 8f72cfaa94
3 changed files with 171 additions and 173 deletions
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2
lvgl_i2c/Kconfig
View file

@ -6,10 +6,8 @@ menu "I2C Port 0"
if I2C_MANAGER_0_ENABLED if I2C_MANAGER_0_ENABLED
config I2C_MANAGER_0_SDA config I2C_MANAGER_0_SDA
int "SDA (GPIO pin)" int "SDA (GPIO pin)"
default 0
config I2C_MANAGER_0_SCL config I2C_MANAGER_0_SCL
int "SCL (GPIO pin)" int "SCL (GPIO pin)"
default 0
config I2C_MANAGER_0_FREQ_HZ config I2C_MANAGER_0_FREQ_HZ
int "Frequency (Hz)" int "Frequency (Hz)"
default 400000 default 400000

306
lvgl_i2c/i2c_manager.c
View file

@ -42,7 +42,7 @@ SOFTWARE.
#if defined __has_include #if defined __has_include
#if __has_include ("esp_idf_version.h") #if __has_include ("esp_idf_version.h")
#include "esp_idf_version.h" #include "esp_idf_version.h"
#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 3, 0) #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 3, 0)
#define HAS_CLK_FLAGS #define HAS_CLK_FLAGS
@ -58,29 +58,29 @@ static SemaphoreHandle_t* I2C_FN(_mutex) = &I2C_FN(_local_mutex)[0];
static const uint8_t ACK_CHECK_EN = 1; static const uint8_t ACK_CHECK_EN = 1;
#if defined (CONFIG_I2C_MANAGER_0_ENABLED) #if defined (I2C_NUM_0) && defined (CONFIG_I2C_MANAGER_0_ENABLED)
#define I2C_ZERO I2C_NUM_0 #define I2C_ZERO I2C_NUM_0
#if defined (CONFIG_I2C_MANAGER_0_PULLUPS) #if defined (CONFIG_I2C_MANAGER_0_PULLUPS)
#define I2C_MANAGER_0_PULLUPS true #define I2C_MANAGER_0_PULLUPS true
#else #else
#define I2C_MANAGER_0_PULLUPS false #define I2C_MANAGER_0_PULLUPS false
#endif #endif
#define I2C_MANAGER_0_TIMEOUT ( CONFIG_I2C_MANAGER_0_TIMEOUT / portTICK_PERIOD_MS ) #define I2C_MANAGER_0_TIMEOUT ( pdMS_TO_TICKS( CONFIG_I2C_MANAGER_0_TIMEOUT ) )
#define I2C_MANAGER_0_LOCK_TIMEOUT ( CONFIG_I2C_MANAGER_0_LOCK_TIMEOUT / portTICK_PERIOD_MS ) #define I2C_MANAGER_0_LOCK_TIMEOUT ( ( pdMS_TO_TICKS( CONFIG_I2C_MANAGER_0_LOCK_TIMEOUT ) )
#endif #endif
#if defined (CONFIG_I2C_MANAGER_1_ENABLED) #if defined (I2C_NUM_1) && defined (CONFIG_I2C_MANAGER_1_ENABLED)
#define I2C_ONE I2C_NUM_1 #define I2C_ONE I2C_NUM_1
#if defined (CONFIG_I2C_MANAGER_1_PULLUPS) #if defined (CONFIG_I2C_MANAGER_1_PULLUPS)
#define I2C_MANAGER_1_PULLUPS true #define I2C_MANAGER_1_PULLUPS true
#else #else
#define I2C_MANAGER_1_PULLUPS false #define I2C_MANAGER_1_PULLUPS false
#endif #endif
#define I2C_MANAGER_1_TIMEOUT ( CONFIG_I2C_MANAGER_1_TIMEOUT / portTICK_PERIOD_MS ) #define I2C_MANAGER_1_TIMEOUT ( pdMS_TO_TICKS( CONFIG_I2C_MANAGER_1_TIMEOUT ) )
#define I2C_MANAGER_1_LOCK_TIMEOUT ( CONFIG_I2C_MANAGER_1_LOCK_TIMEOUT / portTICK_PERIOD_MS ) #define I2C_MANAGER_1_LOCK_TIMEOUT ( pdMS_TO_TICKS( CONFIG_I2C_MANAGER_1_LOCK_TIMEOUT ) )
#endif #endif
#define ERROR_PORT(port, fail) { \ #define ERROR_PORT(port, fail) { \
@ -89,198 +89,198 @@ static const uint8_t ACK_CHECK_EN = 1;
} }
#if defined(I2C_ZERO) && defined (I2C_ONE) #if defined(I2C_ZERO) && defined (I2C_ONE)
#define I2C_PORT_CHECK(port, fail) \ #define I2C_PORT_CHECK(port, fail) \
if (port != I2C_NUM_0 && port != I2C_NUM_1) ERROR_PORT(port, fail); if (port != I2C_NUM_0 && port != I2C_NUM_1) ERROR_PORT(port, fail);
#else #else
#if defined(I2C_ZERO) #if defined(I2C_ZERO)
#define I2C_PORT_CHECK(port, fail) \ #define I2C_PORT_CHECK(port, fail) \
if (port != I2C_NUM_0) ERROR_PORT(port, fail); if (port != I2C_NUM_0) ERROR_PORT(port, fail);
#elif defined(I2C_ONE) #elif defined(I2C_ONE)
#define I2C_PORT_CHECK(port, fail) \ #define I2C_PORT_CHECK(port, fail) \
if (port != I2C_NUM_1) ERROR_PORT(port, fail); if (port != I2C_NUM_1) ERROR_PORT(port, fail);
#else #else
#define I2C_PORT_CHECK(port, fail) \ #define I2C_PORT_CHECK(port, fail) \
ERROR_PORT(port, fail); ERROR_PORT(port, fail);
#endif #endif
#endif #endif
static void i2c_send_address(i2c_cmd_handle_t cmd, uint16_t addr, i2c_rw_t rw) { static void i2c_send_address(i2c_cmd_handle_t cmd, uint16_t addr, i2c_rw_t rw) {
if (addr & I2C_ADDR_10) { if (addr & I2C_ADDR_10) {
i2c_master_write_byte(cmd, 0xF0 | ((addr & 0x3FF) >> 7) | rw, ACK_CHECK_EN); i2c_master_write_byte(cmd, 0xF0 | ((addr & 0x3FF) >> 7) | rw, ACK_CHECK_EN);
i2c_master_write_byte(cmd, addr & 0xFF, ACK_CHECK_EN); i2c_master_write_byte(cmd, addr & 0xFF, ACK_CHECK_EN);
} else { } else {
i2c_master_write_byte(cmd, (addr << 1) | rw, ACK_CHECK_EN); i2c_master_write_byte(cmd, (addr << 1) | rw, ACK_CHECK_EN);
} }
} }
static void i2c_send_register(i2c_cmd_handle_t cmd, uint32_t reg) { static void i2c_send_register(i2c_cmd_handle_t cmd, uint32_t reg) {
if (reg & I2C_REG_16) { if (reg & I2C_REG_16) {
i2c_master_write_byte(cmd, (reg & 0xFF00) >> 8, ACK_CHECK_EN); i2c_master_write_byte(cmd, (reg & 0xFF00) >> 8, ACK_CHECK_EN);
} }
i2c_master_write_byte(cmd, reg & 0xFF, ACK_CHECK_EN); i2c_master_write_byte(cmd, reg & 0xFF, ACK_CHECK_EN);
} }
esp_err_t I2C_FN(_init)(i2c_port_t port) { esp_err_t I2C_FN(_init)(i2c_port_t port) {
I2C_PORT_CHECK(port, ESP_FAIL); I2C_PORT_CHECK(port, ESP_FAIL);
esp_err_t ret = ESP_OK; esp_err_t ret = ESP_OK;
if (I2C_FN(_mutex)[port] == 0) { if (I2C_FN(_mutex)[port] == 0) {
ESP_LOGI(TAG, "Starting I2C master at port %d.", (int)port); ESP_LOGI(TAG, "Starting I2C master at port %d.", (int)port);
I2C_FN(_mutex)[port] = xSemaphoreCreateMutex(); I2C_FN(_mutex)[port] = xSemaphoreCreateMutex();
i2c_config_t conf = {0}; i2c_config_t conf = {0};
#ifdef HAS_CLK_FLAGS #ifdef HAS_CLK_FLAGS
conf.clk_flags = 0; conf.clk_flags = 0;
#endif #endif
#if defined (I2C_ZERO) #if defined (I2C_ZERO)
if (port == I2C_NUM_0) { if (port == I2C_NUM_0) {
conf.sda_io_num = CONFIG_I2C_MANAGER_0_SDA; conf.sda_io_num = CONFIG_I2C_MANAGER_0_SDA;
conf.scl_io_num = CONFIG_I2C_MANAGER_0_SCL; conf.scl_io_num = CONFIG_I2C_MANAGER_0_SCL;
conf.sda_pullup_en = I2C_MANAGER_0_PULLUPS ? GPIO_PULLUP_ENABLE : GPIO_PULLUP_DISABLE; conf.sda_pullup_en = I2C_MANAGER_0_PULLUPS ? GPIO_PULLUP_ENABLE : GPIO_PULLUP_DISABLE;
conf.scl_pullup_en = conf.sda_pullup_en; conf.scl_pullup_en = conf.sda_pullup_en;
conf.master.clk_speed = CONFIG_I2C_MANAGER_0_FREQ_HZ; conf.master.clk_speed = CONFIG_I2C_MANAGER_0_FREQ_HZ;
} }
#endif #endif
#if defined (I2C_ONE) #if defined (I2C_ONE)
if (port == I2C_NUM_1) { if (port == I2C_NUM_1) {
conf.sda_io_num = CONFIG_I2C_MANAGER_1_SDA; conf.sda_io_num = CONFIG_I2C_MANAGER_1_SDA;
conf.scl_io_num = CONFIG_I2C_MANAGER_1_SCL; conf.scl_io_num = CONFIG_I2C_MANAGER_1_SCL;
conf.sda_pullup_en = I2C_MANAGER_1_PULLUPS ? GPIO_PULLUP_ENABLE : GPIO_PULLUP_DISABLE; conf.sda_pullup_en = I2C_MANAGER_1_PULLUPS ? GPIO_PULLUP_ENABLE : GPIO_PULLUP_DISABLE;
conf.scl_pullup_en = conf.sda_pullup_en; conf.scl_pullup_en = conf.sda_pullup_en;
conf.master.clk_speed = CONFIG_I2C_MANAGER_1_FREQ_HZ; conf.master.clk_speed = CONFIG_I2C_MANAGER_1_FREQ_HZ;
} }
#endif #endif
conf.mode = I2C_MODE_MASTER; conf.mode = I2C_MODE_MASTER;
ret = i2c_param_config(port, &conf); ret = i2c_param_config(port, &conf);
ret |= i2c_driver_install(port, conf.mode, 0, 0, 0); ret |= i2c_driver_install(port, conf.mode, 0, 0, 0);
if (ret != ESP_OK) { if (ret != ESP_OK) {
ESP_LOGE(TAG, "Failed to initialise I2C port %d.", (int)port); ESP_LOGE(TAG, "Failed to initialise I2C port %d.", (int)port);
ESP_LOGW(TAG, "If it was already open, we'll use it with whatever settings were used " ESP_LOGW(TAG, "If it was already open, we'll use it with whatever settings were used "
"to open it. See I2C Manager README for details."); "to open it. See I2C Manager README for details.");
} else { } else {
ESP_LOGI(TAG, "Initialised port %d (SDA: %d, SCL: %d, speed: %lu Hz.)", ESP_LOGI(TAG, "Initialised port %d (SDA: %d, SCL: %d, speed: %d Hz.)",
port, conf.sda_io_num, conf.scl_io_num, conf.master.clk_speed); port, conf.sda_io_num, conf.scl_io_num, conf.master.clk_speed);
} }
} }
return ret; return ret;
} }
esp_err_t I2C_FN(_read)(i2c_port_t port, uint16_t addr, uint32_t reg, uint8_t *buffer, uint16_t size) { esp_err_t I2C_FN(_read)(i2c_port_t port, uint16_t addr, uint32_t reg, uint8_t *buffer, uint16_t size) {
I2C_PORT_CHECK(port, ESP_FAIL); I2C_PORT_CHECK(port, ESP_FAIL);
esp_err_t result; esp_err_t result;
// May seem weird, but init starts with a check if it's needed, no need for that check twice. // May seem weird, but init starts with a check if it's needed, no need for that check twice.
I2C_FN(_init)(port); I2C_FN(_init)(port);
ESP_LOGV(TAG, "Reading port %d, addr 0x%03x, reg 0x%04lx", port, addr, reg); ESP_LOGV(TAG, "Reading port %d, addr 0x%03x, reg 0x%04x", port, addr, reg);
TickType_t timeout = 0; TickType_t timeout = 0;
#if defined (I2C_ZERO) #if defined (I2C_ZERO)
if (port == I2C_NUM_0) { if (port == I2C_NUM_0) {
timeout = I2C_MANAGER_0_TIMEOUT; timeout = I2C_MANAGER_0_TIMEOUT;
} }
#endif #endif
#if defined (I2C_ONE) #if defined (I2C_ONE)
if (port == I2C_NUM_1) { if (port == I2C_NUM_1) {
timeout = I2C_MANAGER_1_TIMEOUT; timeout = I2C_MANAGER_1_TIMEOUT;
} }
#endif #endif
if (I2C_FN(_lock)((int)port) == ESP_OK) { if (I2C_FN(_lock)((int)port) == ESP_OK) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create(); i2c_cmd_handle_t cmd = i2c_cmd_link_create();
if (!(reg & I2C_NO_REG)) { if (!(reg & I2C_NO_REG)) {
/* When reading specific register set the addr pointer first. */ /* When reading specific register set the addr pointer first. */
i2c_master_start(cmd); i2c_master_start(cmd);
i2c_send_address(cmd, addr, I2C_MASTER_WRITE); i2c_send_address(cmd, addr, I2C_MASTER_WRITE);
i2c_send_register(cmd, reg); i2c_send_register(cmd, reg);
} }
/* Read size bytes from the current pointer. */ /* Read size bytes from the current pointer. */
i2c_master_start(cmd); i2c_master_start(cmd);
i2c_send_address(cmd, addr, I2C_MASTER_READ); i2c_send_address(cmd, addr, I2C_MASTER_READ);
i2c_master_read(cmd, buffer, size, I2C_MASTER_LAST_NACK); i2c_master_read(cmd, buffer, size, I2C_MASTER_LAST_NACK);
i2c_master_stop(cmd); i2c_master_stop(cmd);
result = i2c_master_cmd_begin(port, cmd, timeout); result = i2c_master_cmd_begin(port, cmd, timeout);
i2c_cmd_link_delete(cmd); i2c_cmd_link_delete(cmd);
I2C_FN(_unlock)((int)port); I2C_FN(_unlock)((int)port);
} else { } else {
ESP_LOGE(TAG, "Lock could not be obtained for port %d.", (int)port); ESP_LOGE(TAG, "Lock could not be obtained for port %d.", (int)port);
return ESP_ERR_TIMEOUT; return ESP_ERR_TIMEOUT;
}
if (result != ESP_OK) {
ESP_LOGW(TAG, "Error: %d", result);
} }
ESP_LOG_BUFFER_HEX_LEVEL(TAG, buffer, size, ESP_LOG_VERBOSE); if (result != ESP_OK) {
ESP_LOGD(TAG, "Error: %d", result);
}
ESP_LOG_BUFFER_HEX_LEVEL(TAG, buffer, size, ESP_LOG_VERBOSE);
return result; return result;
} }
esp_err_t I2C_FN(_write)(i2c_port_t port, uint16_t addr, uint32_t reg, const uint8_t *buffer, uint16_t size) { esp_err_t I2C_FN(_write)(i2c_port_t port, uint16_t addr, uint32_t reg, const uint8_t *buffer, uint16_t size) {
I2C_PORT_CHECK(port, ESP_FAIL); I2C_PORT_CHECK(port, ESP_FAIL);
esp_err_t result; esp_err_t result;
// May seem weird, but init starts with a check if it's needed, no need for that check twice. // May seem weird, but init starts with a check if it's needed, no need for that check twice.
I2C_FN(_init)(port); I2C_FN(_init)(port);
ESP_LOGV(TAG, "Writing port %d, addr 0x%03x, reg 0x%04lx", port, addr, reg); ESP_LOGV(TAG, "Writing port %d, addr 0x%03x, reg 0x%04x", port, addr, reg);
TickType_t timeout = 0; TickType_t timeout = 0;
#if defined (I2C_ZERO) #if defined (I2C_ZERO)
if (port == I2C_NUM_0) { if (port == I2C_NUM_0) {
timeout = (CONFIG_I2C_MANAGER_0_TIMEOUT) / portTICK_PERIOD_MS; timeout = pdMS_TO_TICKS( CONFIG_I2C_MANAGER_0_TIMEOUT );
} }
#endif #endif
#if defined (I2C_ONE) #if defined (I2C_ONE)
if (port == I2C_NUM_1) { if (port == I2C_NUM_1) {
timeout = (CONFIG_I2C_MANAGER_1_TIMEOUT) / portTICK_PERIOD_MS; timeout = pdMS_TO_TICKS( CONFIG_I2C_MANAGER_1_TIMEOUT );
} }
#endif #endif
if (I2C_FN(_lock)((int)port) == ESP_OK) { if (I2C_FN(_lock)((int)port) == ESP_OK) {
i2c_cmd_handle_t cmd = i2c_cmd_link_create(); i2c_cmd_handle_t cmd = i2c_cmd_link_create();
i2c_master_start(cmd); i2c_master_start(cmd);
i2c_send_address(cmd, addr, I2C_MASTER_WRITE); i2c_send_address(cmd, addr, I2C_MASTER_WRITE);
if (!(reg & I2C_NO_REG)) { if (!(reg & I2C_NO_REG)) {
i2c_send_register(cmd, reg); i2c_send_register(cmd, reg);
} }
i2c_master_write(cmd, (uint8_t *)buffer, size, ACK_CHECK_EN); i2c_master_write(cmd, (uint8_t *)buffer, size, ACK_CHECK_EN);
i2c_master_stop(cmd); i2c_master_stop(cmd);
result = i2c_master_cmd_begin( port, cmd, timeout); result = i2c_master_cmd_begin( port, cmd, timeout);
i2c_cmd_link_delete(cmd); i2c_cmd_link_delete(cmd);
I2C_FN(_unlock)((int)port); I2C_FN(_unlock)((int)port);
} else { } else {
ESP_LOGE(TAG, "Lock could not be obtained for port %d.", (int)port); ESP_LOGE(TAG, "Lock could not be obtained for port %d.", (int)port);
return ESP_ERR_TIMEOUT; return ESP_ERR_TIMEOUT;
}
if (result != ESP_OK) {
ESP_LOGW(TAG, "Error: %d", result);
} }
ESP_LOG_BUFFER_HEX_LEVEL(TAG, buffer, size, ESP_LOG_VERBOSE); if (result != ESP_OK) {
ESP_LOGD(TAG, "Error: %d", result);
}
ESP_LOG_BUFFER_HEX_LEVEL(TAG, buffer, size, ESP_LOG_VERBOSE);
return result; return result;
} }
esp_err_t I2C_FN(_close)(i2c_port_t port) { esp_err_t I2C_FN(_close)(i2c_port_t port) {
I2C_PORT_CHECK(port, ESP_FAIL); I2C_PORT_CHECK(port, ESP_FAIL);
vSemaphoreDelete(I2C_FN(_mutex)[port]); vSemaphoreDelete(I2C_FN(_mutex)[port]);
I2C_FN(_mutex)[port] = NULL; I2C_FN(_mutex)[port] = NULL;
ESP_LOGI(TAG, "Closing I2C master at port %d", port); ESP_LOGI(TAG, "Closing I2C master at port %d", port);
@ -288,59 +288,59 @@ esp_err_t I2C_FN(_close)(i2c_port_t port) {
} }
esp_err_t I2C_FN(_lock)(i2c_port_t port) { esp_err_t I2C_FN(_lock)(i2c_port_t port) {
I2C_PORT_CHECK(port, ESP_FAIL); I2C_PORT_CHECK(port, ESP_FAIL);
ESP_LOGV(TAG, "Mutex lock set for %d.", (int)port); ESP_LOGV(TAG, "Mutex lock set for %d.", (int)port);
TickType_t timeout; TickType_t timeout;
#if defined (I2C_ZERO) #if defined (I2C_ZERO)
if (port == I2C_NUM_0) { if (port == I2C_NUM_0) {
timeout = (CONFIG_I2C_MANAGER_0_LOCK_TIMEOUT) / portTICK_PERIOD_MS; timeout = pdMS_TO_TICKS( CONFIG_I2C_MANAGER_0_LOCK_TIMEOUT );
} }
#endif #endif
#if defined (I2C_ONE) #if defined (I2C_ONE)
if (port == I2C_NUM_1) { if (port == I2C_NUM_1) {
timeout = (CONFIG_I2C_MANAGER_1_LOCK_TIMEOUT) / portTICK_PERIOD_MS; timeout = pdMS_TO_TICKS( CONFIG_I2C_MANAGER_1_LOCK_TIMEOUT );
} }
#endif #endif
if (xSemaphoreTake(I2C_FN(_mutex)[port], timeout) == pdTRUE) { if (xSemaphoreTake(I2C_FN(_mutex)[port], timeout) == pdTRUE) {
return ESP_OK; return ESP_OK;
} else { } else {
ESP_LOGE(TAG, "Removing stale mutex lock from port %d.", (int)port); ESP_LOGE(TAG, "Removing stale mutex lock from port %d.", (int)port);
I2C_FN(_force_unlock)(port); I2C_FN(_force_unlock)(port);
return (xSemaphoreTake(I2C_FN(_mutex)[port], timeout) == pdTRUE ? ESP_OK : ESP_FAIL); return (xSemaphoreTake(I2C_FN(_mutex)[port], timeout) == pdTRUE ? ESP_OK : ESP_FAIL);
} }
} }
esp_err_t I2C_FN(_unlock)(i2c_port_t port) { esp_err_t I2C_FN(_unlock)(i2c_port_t port) {
I2C_PORT_CHECK(port, ESP_FAIL); I2C_PORT_CHECK(port, ESP_FAIL);
ESP_LOGV(TAG, "Mutex lock removed for %d.", (int)port); ESP_LOGV(TAG, "Mutex lock removed for %d.", (int)port);
return (xSemaphoreGive(I2C_FN(_mutex)[port]) == pdTRUE) ? ESP_OK : ESP_FAIL; return (xSemaphoreGive(I2C_FN(_mutex)[port]) == pdTRUE) ? ESP_OK : ESP_FAIL;
} }
esp_err_t I2C_FN(_force_unlock)(i2c_port_t port) { esp_err_t I2C_FN(_force_unlock)(i2c_port_t port) {
I2C_PORT_CHECK(port, ESP_FAIL); I2C_PORT_CHECK(port, ESP_FAIL);
if (I2C_FN(_mutex)[port]) { if (I2C_FN(_mutex)[port]) {
vSemaphoreDelete(I2C_FN(_mutex)[port]); vSemaphoreDelete(I2C_FN(_mutex)[port]);
} }
I2C_FN(_mutex)[port] = xSemaphoreCreateMutex(); I2C_FN(_mutex)[port] = xSemaphoreCreateMutex();
return ESP_OK; return ESP_OK;
} }
#ifdef I2C_OEM #ifdef I2C_OEM
void I2C_FN(_locking)(void* leader) { void I2C_FN(_locking)(void* leader) {
if (leader) { if (leader) {
ESP_LOGI(TAG, "Now following I2C Manager for locking"); ESP_LOGI(TAG, "Now following I2C Manager for locking");
I2C_FN(_mutex) = (SemaphoreHandle_t*)leader; I2C_FN(_mutex) = (SemaphoreHandle_t*)leader;
}
} }
}
#else #else
void* i2c_manager_locking() { void* i2c_manager_locking() {
return (void*)i2c_manager_mutex; return (void*)i2c_manager_mutex;
} }

20
lvgl_i2c/i2c_manager.h
View file

@ -29,9 +29,9 @@ extern "C" {
#define STR_QUOTE(s) STR_EXPAND(STR_EXPAND(s)) #define STR_QUOTE(s) STR_EXPAND(STR_EXPAND(s))
#ifdef I2C_OEM #ifdef I2C_OEM
#define I2C_NAME_PREFIX CONCAT(I2C_OEM, _i2c) #define I2C_NAME_PREFIX CONCAT(I2C_OEM, _i2c)
#else #else
#define I2C_NAME_PREFIX i2c_manager #define I2C_NAME_PREFIX i2c_manager
#endif #endif
#define I2C_TAG STR_EXPAND(I2C_NAME_PREFIX) #define I2C_TAG STR_EXPAND(I2C_NAME_PREFIX)
@ -53,19 +53,19 @@ esp_err_t I2C_FN(_force_unlock)(i2c_port_t port);
#ifdef I2C_OEM #ifdef I2C_OEM
void I2C_FN(_locking)(void* leader); void I2C_FN(_locking)(void* leader);
#else #else
void* i2c_manager_locking(); void* i2c_manager_locking();
typedef struct { typedef struct {
int32_t (* read)(void *handle, uint8_t address, uint8_t reg, uint8_t *buffer, uint16_t size); int32_t (* read)(void *handle, uint8_t address, uint8_t reg, uint8_t *buffer, uint16_t size);
int32_t (* write)(void *handle, uint8_t address, uint8_t reg, const uint8_t *buffer, uint16_t size); int32_t (* write)(void *handle, uint8_t address, uint8_t reg, const uint8_t *buffer, uint16_t size);
void *handle; void *handle;
} i2c_hal_t; } i2c_hal_t;
void* i2c_hal(i2c_port_t port); void* i2c_hal(i2c_port_t port);
#endif #endif