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Copy pathpika_hal_ESP32_IIC.c
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Copy pathpika_hal_ESP32_IIC.c
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279 lines (248 loc) · 7.48 KB
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#include "../PikaStdDevice/pika_hal.h"
#include "driver/i2c.h"
#define TEMP_SDA_IO 41 // 这里应该备多组i2c的io以对应不同I2Cx
#define TEMP_SCL_IO 42
typedef struct
{
i2c_config_t conf;
int port;
unsigned int timeout;
PIKA_HAL_IIC_MEM_ADDR mem_addr;
PIKA_HAL_IIC_MEM_ADDR_ENA mem_addr_ena;
PIKA_HAL_IIC_MEM_ADDR_SIZE mem_addr_size;
unsigned int slave_addr;
} esp_iic_t;
int pika_hal_platform_IIC_open(pika_dev *dev, char *name)
{
esp_iic_t *platform_i2c = pikaMalloc(sizeof(esp_iic_t));
memset(platform_i2c, 0, sizeof(esp_iic_t));
dev->platform_data = platform_i2c;
int iic_num = fast_atoi(name + 3);
if (!(name[0] == 'I' && name[1] == 'I' && name[2] == 'C') || iic_num <= I2C_NUM_MAX)
{
__platform_printf("IIC: Open %s failed\r\n", name);
goto err;
}
platform_i2c->port = iic_num;
return 0;
err:
return -1;
}
int pika_hal_platform_IIC_close(pika_dev *dev)
{
esp_iic_t *platform_i2c = (esp_iic_t *)dev->platform_data;
if (NULL == platform_i2c)
{
goto err;
}
pikaFree(platform_i2c, sizeof(esp_iic_t));
return 0;
err:
return -1;
}
int pika_hal_platform_IIC_ioctl_config(pika_dev *dev,
pika_hal_IIC_config *cfg)
{
esp_iic_t *platform_i2c = (esp_iic_t *)dev->platform_data;
if (dev->is_enabled)
{
goto err;
}
platform_i2c->timeout = cfg->timeout;
platform_i2c->mem_addr = cfg->mem_addr;
platform_i2c->mem_addr_ena = cfg->mem_addr_ena;
platform_i2c->mem_addr_size = cfg->mem_addr_size;
platform_i2c->slave_addr = cfg->slave_addr;
platform_i2c->conf.sda_io_num = TEMP_SDA_IO;
platform_i2c->conf.sda_pullup_en = GPIO_PULLUP_ENABLE;
platform_i2c->conf.scl_io_num = TEMP_SCL_IO;
platform_i2c->conf.scl_pullup_en = GPIO_PULLUP_ENABLE;
switch (cfg->master_or_slave)
{
case PIKA_HAL_IIC_MASTER:
platform_i2c->conf.mode = I2C_MODE_MASTER;
platform_i2c->conf.master.clk_speed = cfg->speed;
break;
case PIKA_HAL_IIC_SLAVE:
platform_i2c->conf.mode = I2C_MODE_SLAVE;
if (cfg->address_width == PIKA_HAL_IIC_ADDRESS_WIDTH_7BIT)
{
platform_i2c->conf.slave.addr_10bit_en = 0;
}
else if (cfg->address_width == PIKA_HAL_IIC_ADDRESS_WIDTH_10BIT)
{
platform_i2c->conf.slave.addr_10bit_en = 1;
}
platform_i2c->conf.slave.maximum_speed = cfg->speed;
break;
default:
goto err;
}
return 0;
err:
return -1;
}
int pika_hal_platform_IIC_ioctl_enable(pika_dev *dev)
{
esp_iic_t *platform_i2c = (esp_iic_t *)dev->platform_data;
if (dev->is_enabled)
{
goto err;
}
i2c_config_t conf = platform_i2c->conf;
esp_err_t res = i2c_param_config(platform_i2c->port, &conf);
if (res != ESP_OK)
{
goto err;
}
i2c_driver_install(platform_i2c->port, conf.mode, 0, 0, 0);
return 0;
err:
return -1;
}
int pika_hal_platform_IIC_ioctl_disable(pika_dev *dev)
{
if (!dev->is_enabled)
{
goto err;
}
esp_iic_t *platform_i2c = (esp_iic_t *)dev->platform_data;
i2c_driver_delete(platform_i2c->port);
return 0;
err:
return -1;
}
int pika_hal_platform_IIC_write(pika_dev *dev, void *buf, size_t count)
{
esp_iic_t *platform_i2c = (esp_iic_t *)dev->platform_data;
int res = ESP_OK;
if (platform_i2c->conf.mode == I2C_MODE_MASTER)
{
uint8_t buffer[360] = {0};
i2c_cmd_handle_t handle = i2c_cmd_link_create_static(buffer, sizeof(buffer));
assert(handle != NULL);
res = i2c_master_start(handle);
if (res != ESP_OK)
{
goto end;
}
res = i2c_master_write_byte(handle, platform_i2c->slave_addr << 1 | I2C_MASTER_WRITE, true);
if (res != ESP_OK)
{
goto end;
}
if (platform_i2c->mem_addr_ena)
{
if (platform_i2c->mem_addr_size == PIKA_HAL_IIC_MEM_ADDR_SIZE_8BIT)
{
res = i2c_master_write(handle, (uint8_t *)&platform_i2c->mem_addr, 1, true);
}
else if (platform_i2c->mem_addr_size == PIKA_HAL_IIC_MEM_ADDR_SIZE_16BIT)
{
res = i2c_master_write(handle, (uint8_t *)&platform_i2c->mem_addr, 2, true);
}
if (res != ESP_OK)
{
goto end;
}
}
res = i2c_master_write(handle, (uint8_t*)buf, count, true);
if (res != ESP_OK)
{
goto end;
}
i2c_master_stop(handle);
res = i2c_master_cmd_begin(platform_i2c->port, handle, platform_i2c->timeout / portTICK_PERIOD_MS);
end:
i2c_cmd_link_delete_static(handle);
if (res != ESP_OK)
{
goto err;
}
}
else if (platform_i2c->conf.mode == I2C_MODE_SLAVE)
{
res = i2c_slave_write_buffer(platform_i2c->port, (uint8_t*)buf, count, platform_i2c->timeout / portTICK_PERIOD_MS);
if (res != ESP_OK)
{
goto err;
}
}
return 0;
err:
return -1;
}
int pika_hal_platform_IIC_read(pika_dev *dev, void *buf, size_t count)
{
esp_iic_t *platform_i2c = (esp_iic_t *)dev->platform_data;
int res = ESP_OK;
if (platform_i2c->conf.mode == I2C_MODE_MASTER)
{
uint8_t buffer[360] = {0}; // 360是底层宏运算出来的结果，原宏为sizeof(i2c_cmd_desc_t) + sizeof(i2c_cmd_link_t) * 8，在components/driver/i2c.c中
i2c_cmd_handle_t handle = i2c_cmd_link_create_static(buffer, sizeof(buffer));
assert(handle != NULL);
res = i2c_master_start(handle);
if (res != ESP_OK)
{
goto end;
}
if (platform_i2c->mem_addr_ena)
{
res = i2c_master_write_byte(handle, platform_i2c->slave_addr << 1 | I2C_MASTER_WRITE, true);
if (res != ESP_OK)
{
goto end;
}
if (platform_i2c->mem_addr_size == PIKA_HAL_IIC_MEM_ADDR_SIZE_8BIT)
{
res = i2c_master_write(handle, (uint8_t *)&platform_i2c->mem_addr, 1, true);
if (res != ESP_OK)
{
goto end;
}
}
else if (platform_i2c->mem_addr_size == PIKA_HAL_IIC_MEM_ADDR_SIZE_16BIT)
{
res = i2c_master_write(handle, (uint8_t *)&platform_i2c->mem_addr, 2, true);
if (res != ESP_OK)
{
goto end;
}
}
res = i2c_master_start(handle);
if (res != ESP_OK)
{
goto end;
}
}
res = i2c_master_write_byte(handle, platform_i2c->slave_addr << 1 | I2C_MASTER_READ, true);
if (res != ESP_OK)
{
goto end;
}
res = i2c_master_read(handle, (uint8_t*)buf, count, I2C_MASTER_LAST_NACK);
if (res != ESP_OK)
{
goto end;
}
i2c_master_stop(handle);
res = i2c_master_cmd_begin(platform_i2c->port, handle, platform_i2c->timeout);
end:
i2c_cmd_link_delete_static(handle);
if (res != ESP_OK)
{
goto err;
}
}
else if (platform_i2c->conf.mode == I2C_MODE_SLAVE)
{
res = i2c_slave_read_buffer(platform_i2c->port, (uint8_t*)buf, count, platform_i2c->timeout / portTICK_PERIOD_MS);
if (res != ESP_OK)
{
goto err;
}
}
return 0;
err:
return -1;
}