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ulp: Added support for RTC I2C driver for ULP RISC-V on esp32s2 and esp32s3

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This commit adds support for using the RTC I2C peripheral on the ULP
RISC-V core for esp32s2 and esp32s3. It also adds an example to demonstrate the
usage of the RTC I2C peripheral.

This commit also modifies the rtc_i2c register structure files to enable
the use of bitfields in the ULP RISC-V RTC I2C driver.
This commit is contained in:
Sudeep Mohanty
2022-08-09 15:46:14 +02:00
parent 6193e4c8e8
commit 4fde033a5f
21 changed files with 1559 additions and 302 deletions
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315
components/soc/esp32s3/include/soc/rtc_i2c_struct.h
View File

@@ -190,294 +190,27 @@ typedef union {
uint32_t val;
} rtc_i2c_data_reg_t;
/** Type of i2c_cmd0 register
* i2c commond0 register
/** Type of i2c_cmd register
* i2c command register
*/
typedef union {
struct {
/** i2c_command0 : R/W; bitpos: [13:0]; default: 2307;
* command0
/** i2c_command : R/W; bitpos: [13:0]; default: 2307;
* command
*/
uint32_t i2c_command0:14;
uint32_t reserved_14:17;
/** i2c_command0_done : RO; bitpos: [31]; default: 0;
uint32_t i2c_byte_num:8;
uint32_t i2c_ack_en:1;
uint32_t i2c_ack_exp:1;
uint32_t i2c_ack_val:1;
uint32_t i2c_op_code:3;
uint32_t reserved14:17;
/** i2c_command_done : RO; bitpos: [31]; default: 0;
* command0_done
*/
uint32_t i2c_command0_done:1;
uint32_t i2c_command_done:1;
};
uint32_t val;
} rtc_i2c_cmd0_reg_t;
/** Type of i2c_cmd1 register
* i2c commond1 register
*/
typedef union {
struct {
/** i2c_command1 : R/W; bitpos: [13:0]; default: 6401;
* command1
*/
uint32_t i2c_command1:14;
uint32_t reserved_14:17;
/** i2c_command1_done : RO; bitpos: [31]; default: 0;
* command1_done
*/
uint32_t i2c_command1_done:1;
};
uint32_t val;
} rtc_i2c_cmd1_reg_t;
/** Type of i2c_cmd2 register
* i2c commond2 register
*/
typedef union {
struct {
/** i2c_command2 : R/W; bitpos: [13:0]; default: 2306;
* command2
*/
uint32_t i2c_command2:14;
uint32_t reserved_14:17;
/** i2c_command2_done : RO; bitpos: [31]; default: 0;
* command2_done
*/
uint32_t i2c_command2_done:1;
};
uint32_t val;
} rtc_i2c_cmd2_reg_t;
/** Type of i2c_cmd3 register
* i2c commond3 register
*/
typedef union {
struct {
/** i2c_command3 : R/W; bitpos: [13:0]; default: 257;
* command3
*/
uint32_t i2c_command3:14;
uint32_t reserved_14:17;
/** i2c_command3_done : RO; bitpos: [31]; default: 0;
* command3_done
*/
uint32_t i2c_command3_done:1;
};
uint32_t val;
} rtc_i2c_cmd3_reg_t;
/** Type of i2c_cmd4 register
* i2c commond4 register
*/
typedef union {
struct {
/** i2c_command4 : R/W; bitpos: [13:0]; default: 2305;
* command4
*/
uint32_t i2c_command4:14;
uint32_t reserved_14:17;
/** i2c_command4_done : RO; bitpos: [31]; default: 0;
* command4_done
*/
uint32_t i2c_command4_done:1;
};
uint32_t val;
} rtc_i2c_cmd4_reg_t;
/** Type of i2c_cmd5 register
* i2c commond5_register
*/
typedef union {
struct {
/** i2c_command5 : R/W; bitpos: [13:0]; default: 5889;
* command5
*/
uint32_t i2c_command5:14;
uint32_t reserved_14:17;
/** i2c_command5_done : RO; bitpos: [31]; default: 0;
* command5_done
*/
uint32_t i2c_command5_done:1;
};
uint32_t val;
} rtc_i2c_cmd5_reg_t;
/** Type of i2c_cmd6 register
* i2c commond6 register
*/
typedef union {
struct {
/** i2c_command6 : R/W; bitpos: [13:0]; default: 6401;
* command6
*/
uint32_t i2c_command6:14;
uint32_t reserved_14:17;
/** i2c_command6_done : RO; bitpos: [31]; default: 0;
* command6_done
*/
uint32_t i2c_command6_done:1;
};
uint32_t val;
} rtc_i2c_cmd6_reg_t;
/** Type of i2c_cmd7 register
* i2c commond7 register
*/
typedef union {
struct {
/** i2c_command7 : R/W; bitpos: [13:0]; default: 2308;
* command7
*/
uint32_t i2c_command7:14;
uint32_t reserved_14:17;
/** i2c_command7_done : RO; bitpos: [31]; default: 0;
* command7_done
*/
uint32_t i2c_command7_done:1;
};
uint32_t val;
} rtc_i2c_cmd7_reg_t;
/** Type of i2c_cmd8 register
* i2c commond8 register
*/
typedef union {
struct {
/** i2c_command8 : R/W; bitpos: [13:0]; default: 6401;
* command8
*/
uint32_t i2c_command8:14;
uint32_t reserved_14:17;
/** i2c_command8_done : RO; bitpos: [31]; default: 0;
* command8_done
*/
uint32_t i2c_command8_done:1;
};
uint32_t val;
} rtc_i2c_cmd8_reg_t;
/** Type of i2c_cmd9 register
* i2c commond9 register
*/
typedef union {
struct {
/** i2c_command9 : R/W; bitpos: [13:0]; default: 2307;
* command9
*/
uint32_t i2c_command9:14;
uint32_t reserved_14:17;
/** i2c_command9_done : RO; bitpos: [31]; default: 0;
* command9_done
*/
uint32_t i2c_command9_done:1;
};
uint32_t val;
} rtc_i2c_cmd9_reg_t;
/** Type of i2c_cmd10 register
* i2c commond10 register
*/
typedef union {
struct {
/** i2c_command10 : R/W; bitpos: [13:0]; default: 257;
* command10
*/
uint32_t i2c_command10:14;
uint32_t reserved_14:17;
/** i2c_command10_done : RO; bitpos: [31]; default: 0;
* command10_done
*/
uint32_t i2c_command10_done:1;
};
uint32_t val;
} rtc_i2c_cmd10_reg_t;
/** Type of i2c_cmd11 register
* i2c commond11 register
*/
typedef union {
struct {
/** i2c_command11 : R/W; bitpos: [13:0]; default: 2305;
* command11
*/
uint32_t i2c_command11:14;
uint32_t reserved_14:17;
/** i2c_command11_done : RO; bitpos: [31]; default: 0;
* command11_done
*/
uint32_t i2c_command11_done:1;
};
uint32_t val;
} rtc_i2c_cmd11_reg_t;
/** Type of i2c_cmd12 register
* i2c commond12 register
*/
typedef union {
struct {
/** i2c_command12 : R/W; bitpos: [13:0]; default: 5889;
* command12
*/
uint32_t i2c_command12:14;
uint32_t reserved_14:17;
/** i2c_command12_done : RO; bitpos: [31]; default: 0;
* command12_done
*/
uint32_t i2c_command12_done:1;
};
uint32_t val;
} rtc_i2c_cmd12_reg_t;
/** Type of i2c_cmd13 register
* i2c commond13 register
*/
typedef union {
struct {
/** i2c_command13 : R/W; bitpos: [13:0]; default: 6401;
* command13
*/
uint32_t i2c_command13:14;
uint32_t reserved_14:17;
/** i2c_command13_done : RO; bitpos: [31]; default: 0;
* command13_done
*/
uint32_t i2c_command13_done:1;
};
uint32_t val;
} rtc_i2c_cmd13_reg_t;
/** Type of i2c_cmd14 register
* i2c commond14 register
*/
typedef union {
struct {
/** i2c_command14 : R/W; bitpos: [13:0]; default: 0;
* command14
*/
uint32_t i2c_command14:14;
uint32_t reserved_14:17;
/** i2c_command14_done : RO; bitpos: [31]; default: 0;
* command14_done
*/
uint32_t i2c_command14_done:1;
};
uint32_t val;
} rtc_i2c_cmd14_reg_t;
/** Type of i2c_cmd15 register
* i2c commond15 register
*/
typedef union {
struct {
/** i2c_command15 : R/W; bitpos: [13:0]; default: 0;
* command15
*/
uint32_t i2c_command15:14;
uint32_t reserved_14:17;
/** i2c_command15_done : RO; bitpos: [31]; default: 0;
* command15_done
*/
uint32_t i2c_command15_done:1;
};
uint32_t val;
} rtc_i2c_cmd15_reg_t;
} rtc_i2c_cmd_reg_t;
/** Group: status register */
/** Type of i2c_status register
@@ -750,29 +483,15 @@ typedef struct {
volatile rtc_i2c_int_st_reg_t i2c_int_st;
volatile rtc_i2c_int_ena_reg_t i2c_int_ena;
volatile rtc_i2c_data_reg_t i2c_data;
volatile rtc_i2c_cmd0_reg_t i2c_cmd0;
volatile rtc_i2c_cmd1_reg_t i2c_cmd1;
volatile rtc_i2c_cmd2_reg_t i2c_cmd2;
volatile rtc_i2c_cmd3_reg_t i2c_cmd3;
volatile rtc_i2c_cmd4_reg_t i2c_cmd4;
volatile rtc_i2c_cmd5_reg_t i2c_cmd5;
volatile rtc_i2c_cmd6_reg_t i2c_cmd6;
volatile rtc_i2c_cmd7_reg_t i2c_cmd7;
volatile rtc_i2c_cmd8_reg_t i2c_cmd8;
volatile rtc_i2c_cmd9_reg_t i2c_cmd9;
volatile rtc_i2c_cmd10_reg_t i2c_cmd10;
volatile rtc_i2c_cmd11_reg_t i2c_cmd11;
volatile rtc_i2c_cmd12_reg_t i2c_cmd12;
volatile rtc_i2c_cmd13_reg_t i2c_cmd13;
volatile rtc_i2c_cmd14_reg_t i2c_cmd14;
volatile rtc_i2c_cmd15_reg_t i2c_cmd15;
volatile rtc_i2c_cmd_reg_t i2c_cmd[16];
uint32_t reserved_078[33];
volatile rtc_i2c_date_reg_t i2c_date;
} rtc_dev_t;
} rtc_i2c_dev_t;
extern rtc_i2c_dev_t RTC_I2C;
#ifndef __cplusplus
_Static_assert(sizeof(rtc_dev_t) == 0x100, "Invalid size of rtc_dev_t structure");
_Static_assert(sizeof(rtc_i2c_dev_t) == 0x100, "Invalid size of rtc_i2c_dev_t structure");
#endif
#ifdef __cplusplus

1
components/soc/esp32s3/ld/esp32s3.peripherals.ld
View File

@@ -12,6 +12,7 @@ PROVIDE ( EFUSE = 0x60007000 );
PROVIDE ( RTCCNTL = 0x60008000 );
PROVIDE ( RTCIO = 0x60008400 );
PROVIDE ( SENS = 0x60008800 );
PROVIDE ( RTC_I2C = 0x60008C00 );
PROVIDE ( HINF = 0x6000B000 );
PROVIDE ( I2S0 = 0x6000F000 );
PROVIDE ( I2S1 = 0x6002D000 );