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Merge branch 'feature/bringup_i2c_for_s3' into 'master'

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I2C:  Add support for esp32s3 and add source clock allocator

Closes IDF-2011

See merge request espressif/esp-idf!10923
This commit is contained in:
Michael (XIAO Xufeng)
2020-11-12 22:12:58 +08:00
parent e7b97fe086 6eee601cf6
commit caf83b88ba
14 changed files with 1365 additions and 1212 deletions
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30
components/hal/esp32s2/include/hal/i2c_ll.h
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@@ -68,6 +68,13 @@ typedef struct {
uint16_t tout; /*!< I2C bus timeout period */
} i2c_clk_cal_t;
// I2C operation mode command
#define I2C_LL_CMD_RESTART 0 /*!<I2C restart command */
#define I2C_LL_CMD_WRITE 1 /*!<I2C write command */
#define I2C_LL_CMD_READ 2 /*!<I2C read command */
#define I2C_LL_CMD_STOP 3 /*!<I2C stop command */
#define I2C_LL_CMD_END 4 /*!<I2C end command */
// Get the I2C hardware instance
#define I2C_LL_GET_HW(i2c_num) (((i2c_num) == 0) ? &I2C0 : &I2C1)
// Get the I2C hardware FIFO address
@@ -80,8 +87,8 @@ typedef struct {
#define I2C_LL_SLAVE_TX_INT (I2C_TXFIFO_WM_INT_ENA_M)
// I2C slave RX interrupt bitmap
#define I2C_LL_SLAVE_RX_INT (I2C_RXFIFO_WM_INT_ENA_M | I2C_TRANS_COMPLETE_INT_ENA_M)
// I2C source clock
#define I2C_LL_CLK_SRC_FREQ(src_clk) (((src_clk) == I2C_SCLK_REF_TICK) ? 1000*1000 : 80*1000*1000); // Another clock is APB clock
/**
* @brief Calculate I2C bus frequency
*
@@ -781,7 +788,8 @@ static inline void i2c_ll_master_clr_bus(i2c_dev_t *hw)
*/
static inline void i2c_ll_set_source_clk(i2c_dev_t *hw, i2c_sclk_t src_clk)
{
hw->ctr.ref_always_on = src_clk;
// src_clk : (1) for APB_CLK, (0) for REF_CLK
hw->ctr.ref_always_on = (src_clk == I2C_SCLK_REF_TICK) ? 0 : 1;
}
/**
@@ -846,8 +854,6 @@ static inline void i2c_ll_master_init(i2c_dev_t *hw)
ctrl_reg.ms_mode = 1;
ctrl_reg.sda_force_out = 1;
ctrl_reg.scl_force_out = 1;
//Disable REF tick;
ctrl_reg.ref_always_on = 1;
hw->ctr.val = ctrl_reg.val;
}
@@ -881,13 +887,23 @@ static inline void i2c_ll_slave_init(i2c_dev_t *hw)
//Open-drain output via GPIO
ctrl_reg.sda_force_out = 1;
ctrl_reg.scl_force_out = 1;
//Disable REF tick;
ctrl_reg.ref_always_on = 1;
hw->ctr.val = ctrl_reg.val;
hw->fifo_conf.fifo_addr_cfg_en = 0;
hw->scl_stretch_conf.slave_scl_stretch_en = 0;
}
/**
* @brief Update I2C configuration
*
* @param hw Beginning address of the peripheral registers
*
* @return None
*/
static inline void i2c_ll_update(i2c_dev_t *hw)
{
;// ESP32S2 do not support
}
#ifdef __cplusplus
}
#endif