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feat(i2c_master): Add parameter to config I2C scl await time

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Cao Sen Miao
2024-03-19 12:15:24 +08:00
parent 4505ddc8a9
commit ede1df51b0
15 changed files with 150 additions and 2 deletions
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14
components/hal/esp32c2/include/hal/i2c_ll.h
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@@ -60,6 +60,7 @@ typedef enum {
#define I2C_LL_GET_HW(i2c_num) (&I2C0)
#define I2C_LL_MASTER_EVENT_INTR (I2C_NACK_INT_ENA_M|I2C_TIME_OUT_INT_ENA_M|I2C_TRANS_COMPLETE_INT_ENA_M|I2C_ARBITRATION_LOST_INT_ENA_M|I2C_END_DETECT_INT_ENA_M)
#define I2C_LL_RESET_SLV_SCL_PULSE_NUM_DEFAULT (9)
#define I2C_LL_SCL_WAIT_US_VAL_DEFAULT (2000) // Approximate value for SCL timeout regs (in us).
/**
* @brief Calculate I2C bus frequency
@@ -745,6 +746,19 @@ static inline bool i2c_ll_master_is_cmd_done(i2c_dev_t *hw, int cmd_idx)
return hw->command[cmd_idx].command_done;
}
/**
* @brief Calculate SCL timeout us to reg value
*
* @param timeout_us timeout value in us
* @param src_clk_hz source clock frequency
* @return uint32_t reg value
*/
static inline uint32_t i2c_ll_calculate_timeout_us_to_reg_val(uint32_t src_clk_hz, uint32_t timeout_us)
{
uint32_t clk_cycle_num_per_us = src_clk_hz / (1 * 1000 * 1000);
return 31 - __builtin_clz(clk_cycle_num_per_us * timeout_us);
}
//////////////////////////////////////////Deprecated Functions//////////////////////////////////////////////////////////
/////////////////////////////The following functions are only used by the legacy driver/////////////////////////////////
/////////////////////////////They might be removed in the next major release (ESP-IDF 6.0)//////////////////////////////