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lp-i2c: Added support for LP I2C peripheral to LP core

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This commit adds support for the LP I2C peripheral driver to be used by
the LP core. An example is also added to demonstrate the usage of the LP
I2C peripheral from the LP core.
This commit is contained in:
Sudeep Mohanty
2023-03-20 16:08:38 +01:00
parent 224430f6b4
commit ec742abb25
27 changed files with 1246 additions and 198 deletions
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8
components/driver/i2c/i2c.c
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@@ -110,7 +110,11 @@ static const char *I2C_TAG = "i2c";
#if SOC_I2C_NUM >= 2
_Static_assert(I2C_NUM_1 == 1, "I2C_NUM_1 must be equal to 1");
#endif // SOC_I2C_NUM >= 2
#if SOC_LP_I2C_SUPPORTED
_Static_assert(I2C_NUM_MAX == (SOC_I2C_NUM + SOC_LP_I2C_NUM), "I2C_NUM_MAX must be equal to SOC_I2C_NUM + SOC_LP_I2C_NUM");
#else
_Static_assert(I2C_NUM_MAX == SOC_I2C_NUM, "I2C_NUM_MAX must be equal to SOC_I2C_NUM");
#endif /* SOC_LP_I2C_SUPPORTED */
typedef struct {
i2c_ll_hw_cmd_t hw_cmd;
@@ -259,6 +263,10 @@ esp_err_t i2c_driver_install(i2c_port_t i2c_num, i2c_mode_t mode, size_t slv_rx_
int intr_alloc_flags)
{
ESP_RETURN_ON_FALSE(i2c_num < I2C_NUM_MAX, ESP_ERR_INVALID_ARG, I2C_TAG, I2C_NUM_ERROR_STR);
#if SOC_LP_I2C_SUPPORTED
// TODO: IDF-5817
ESP_RETURN_ON_FALSE(i2c_num != LP_I2C_NUM_0, ESP_ERR_INVALID_ARG, I2C_TAG, "LP_I2C is not supported via i2c_driver_intall()");
#endif // SOC_LP_I2C_SUPPORTED
#if SOC_I2C_SUPPORT_SLAVE
ESP_RETURN_ON_FALSE(mode == I2C_MODE_MASTER || ( slv_rx_buf_len > 100 || slv_tx_buf_len > 100 ),
ESP_ERR_INVALID_ARG, I2C_TAG, I2C_SLAVE_BUFFER_LEN_ERR_STR);