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commit e148048ac261ee1916c80281478f1e482b01eea7
Author: Eren Terzioglu <eren.terzio...@espressif.com>
AuthorDate: Fri Aug 8 19:28:00 2025 +0200
arch/risc-v/esp32c6: Add RTC GPIO support for esp32c6
Add RTC GPIO support for esp32c6
Signed-off-by: Eren Terzioglu <eren.terzio...@espressif.com>
---
arch/risc-v/src/common/espressif/esp_rtc_gpio.c | 75 +++++++++++++++++++++++++
arch/risc-v/src/common/espressif/esp_rtc_gpio.h | 62 ++++++++++++++++++++
2 files changed, 137 insertions(+)
diff --git a/arch/risc-v/src/common/espressif/esp_rtc_gpio.c
b/arch/risc-v/src/common/espressif/esp_rtc_gpio.c
index 5fa8cc498dc..3fa13175643 100644
--- a/arch/risc-v/src/common/espressif/esp_rtc_gpio.c
+++ b/arch/risc-v/src/common/espressif/esp_rtc_gpio.c
@@ -43,6 +43,12 @@
#include "hal/rtc_io_hal.h"
#include "soc/rtc_cntl_periph.h"
#include "soc/periph_defs.h"
+#ifdef CONFIG_ARCH_CHIP_ESP32C6
+#include "driver/rtc_io.h"
+#include "hal/rtc_io_ll.h"
+#include "hal/rtc_io_hal.h"
+#include "io_mux.h"
+#endif
/****************************************************************************
* Pre-processor Definitions
@@ -264,3 +270,72 @@ void esp_rtcioirqdisable(int irq)
}
#endif /* CONFIG_ESPRESSIF_RTCIO_IRQ */
#endif /* CONFIG_ARCH_CHIP_ESP32C3_GENERIC */
+
+#ifdef CONFIG_ARCH_CHIP_ESP32C6
+/****************************************************************************
+ * Name: esp_rtcio_config_gpio
+ *
+ * Description:
+ * Configure a RTC GPIO pin based on encoded pin attributes
+ *
+ * Input Parameters:
+ * pin - RTC GPIO pin to be configured.
+ * mode - Attributes to be configured for the selected RTC GPIO pin.
+ *
+ * Returned Value:
+ * Zero (OK) on success, or -1 (ERROR) in case of failure.
+ *
+ ****************************************************************************/
+
+int esp_rtcio_config_gpio(int pin, enum esp_rtc_gpio_mode_e mode)
+{
+ int ret = rtc_gpio_init(pin);
+ if (ret != OK)
+ {
+ return ret;
+ }
+
+ ret = rtc_gpio_set_direction(pin, mode);
+
+ return ret;
+}
+
+/****************************************************************************
+ * Name: esp_rtcio_read
+ *
+ * Description:
+ * Read one or zero from the selected RTC GPIO pin
+ *
+ * Input Parameters:
+ * pin - RTC GPIO pin to be read.
+ *
+ * Returned Value:
+ * The boolean representation of the input value (true/false).
+ *
+ ****************************************************************************/
+
+int esp_rtcio_read(int pin)
+{
+ return rtc_gpio_get_level(pin);
+}
+
+/****************************************************************************
+ * Name: esp_rtcio_write
+ *
+ * Description:
+ * Write one or zero to the selected RTC GPIO pin
+ *
+ * Input Parameters:
+ * pin - GPIO pin to be modified.
+ * value - The value to be written (0 or 1).
+ *
+ * Returned Value:
+ * None
+ *
+ ****************************************************************************/
+
+void esp_rtcio_write(int pin, bool value)
+{
+ rtc_gpio_set_level(pin, value);
+}
+#endif /* CONFIG_ARCH_CHIP_ESP32C6 */
diff --git a/arch/risc-v/src/common/espressif/esp_rtc_gpio.h
b/arch/risc-v/src/common/espressif/esp_rtc_gpio.h
index 7790c91fada..52837e9dceb 100644
--- a/arch/risc-v/src/common/espressif/esp_rtc_gpio.h
+++ b/arch/risc-v/src/common/espressif/esp_rtc_gpio.h
@@ -40,6 +40,16 @@
* Public Types
****************************************************************************/
+typedef enum esp_rtc_gpio_mode_e
+{
+ ESP_RTC_GPIO_MODE_INPUT,
+ ESP_RTC_GPIO_MODE_OUTPUT,
+ ESP_RTC_GPIO_MODE_INPUT_OUTPUT,
+ ESP_RTC_GPIO_MODE_DISABLED,
+ ESP_RTC_GPIO_MODE_OUTPUT_OD,
+ ESP_RTC_GPIO_MODE_INPUT_OUTPUT_OD
+} esp_rtc_gpio_mode_t;
+
#ifndef __ASSEMBLY__
/****************************************************************************
@@ -111,5 +121,57 @@ void esp_rtcioirqdisable(int irq);
# define esp_rtcioirqdisable(irq)
#endif
+#ifdef CONFIG_ARCH_CHIP_ESP32C6
+/****************************************************************************
+ * Name: esp_rtcio_config_gpio
+ *
+ * Description:
+ * Configure a RTC GPIO pin based on encoded pin attributes
+ *
+ * Input Parameters:
+ * pin - RTC GPIO pin to be configured.
+ * mode - Attributes to be configured for the selected RTC GPIO pin.
+ *
+ * Returned Value:
+ * Zero (OK) on success, or -1 (ERROR) in case of failure.
+ *
+ ****************************************************************************/
+
+int esp_rtcio_config_gpio(int pin, enum esp_rtc_gpio_mode_e mode);
+
+/****************************************************************************
+ * Name: esp_rtcio_read
+ *
+ * Description:
+ * Read one or zero from the selected RTC GPIO pin
+ *
+ * Input Parameters:
+ * pin - RTC GPIO pin to be read.
+ *
+ * Returned Value:
+ * The boolean representation of the input value (true/false).
+ *
+ ****************************************************************************/
+
+int esp_rtcio_read(int pin);
+
+/****************************************************************************
+ * Name: esp_rtcio_write
+ *
+ * Description:
+ * Write one or zero to the selected RTC GPIO pin
+ *
+ * Input Parameters:
+ * pin - GPIO pin to be modified.
+ * value - The value to be written (0 or 1).
+ *
+ * Returned Value:
+ * None
+ *
+ ****************************************************************************/
+
+void esp_rtcio_write(int pin, bool value);
+#endif /* CONFIG_ARCH_CHIP_ESP32C6 */
+
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_RISC_V_SRC_COMMON_ESPRESSIF_ESP_RTC_GPIO_H */
