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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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6
components/soc/esp32c3/include/soc/rtc_i2c_struct.h
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@@ -165,7 +165,11 @@ typedef volatile struct rtc_i2c_dev_s {
} fifo_data;
union {
struct {
uint32_t command0: 14; /*command0*/
uint32_t byte_num: 8;
uint32_t ack_en: 1;
uint32_t ack_exp: 1;
uint32_t ack_val: 1;
uint32_t op_code: 3;
uint32_t reserved14: 17;
uint32_t done: 1; /*command0_done*/
};