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Merge branch 'bugfix/rtc_i2c_not_in_od_mode_v5.1' into 'release/v5.1'

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fix(ulp_riscv): Updated RTC I2C to use open-drain IOs (v5.1)

See merge request espressif/esp-idf!28932
This commit is contained in:
Marius Vikhammer 2024-02-27 18:16:08 +08:00
commit b80a694abe
1 changed files with 10 additions and 1 deletions
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11
components/ulp/ulp_riscv/ulp_riscv_i2c.c
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@ -72,7 +72,7 @@ static esp_err_t i2c_configure_io(gpio_num_t io_num, bool pullup_en)
/* Initialize IO Pin */
ESP_RETURN_ON_ERROR(rtc_gpio_init(io_num), RTCI2C_TAG, "RTC GPIO Init failed for GPIO %d", io_num);
/* Set direction to input+output */
ESP_RETURN_ON_ERROR(rtc_gpio_set_direction(io_num, RTC_GPIO_MODE_INPUT_OUTPUT), RTCI2C_TAG, "RTC GPIO Set direction failed for %d", io_num);
ESP_RETURN_ON_ERROR(rtc_gpio_set_direction(io_num, RTC_GPIO_MODE_INPUT_OUTPUT_OD), RTCI2C_TAG, "RTC GPIO Set direction failed for %d", io_num);
/* Disable pulldown on the io pin */
ESP_RETURN_ON_ERROR(rtc_gpio_pulldown_dis(io_num), RTCI2C_TAG, "RTC GPIO pulldown disable failed for %d", io_num);
/* Enable pullup based on pullup_en flag */
@ -479,6 +479,15 @@ esp_err_t ulp_riscv_i2c_master_init(const ulp_riscv_i2c_cfg_t *cfg)
/* Configure RTC I2C GPIOs */
ESP_RETURN_ON_ERROR(i2c_set_pin(cfg), RTCI2C_TAG, "Failed to configure RTC I2C GPIOs");
/* Enable internal open-drain mode for SDA and SCL lines */
#if CONFIG_IDF_TARGET_ESP32S2
i2c_dev->ctrl.sda_force_out = 0;
i2c_dev->ctrl.scl_force_out = 0;
#elif CONFIG_IDF_TARGET_ESP32S3
i2c_dev->i2c_ctrl.i2c_sda_force_out = 0;
i2c_dev->i2c_ctrl.i2c_scl_force_out = 0;
#endif // CONFIG_IDF_TARGET_ESP32S2
#if CONFIG_IDF_TARGET_ESP32S2
/* Configure the RTC I2C controller in master mode */
i2c_dev->ctrl.ms_mode = 1;