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commit 092d7eac731f266801bea7fca0b51801c6fd66e3
Author: Eren Terzioglu <eren.terzio...@espressif.com>
AuthorDate: Fri Aug 8 19:29:24 2025 +0200
boards/risc-v/esp32c6: Add RTC GPIO board support for esp32c6
Add RTC GPIO board support for esp32c6
Signed-off-by: Eren Terzioglu <eren.terzio...@espressif.com>
---
.../esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c | 91 ++++++++++++++++++++++
1 file changed, 91 insertions(+)
diff --git a/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
b/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
index 3d869c79ba9..fca1d764a0f 100644
--- a/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
+++ b/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
@@ -47,6 +47,7 @@
#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
#include "espressif/esp_dedic_gpio.h"
#endif
+#include "espressif/esp_rtc_gpio.h"
/* Board */
@@ -86,6 +87,9 @@
#define GPIO_DEDIC2 5
#define GPIO_DEDIC_COUNT 2
+#define GPIO_RTC1 0
+#define GPIO_RTC_COUNT 1
+
/****************************************************************************
* Private Types
****************************************************************************/
@@ -121,6 +125,8 @@ static int gpint_enable(struct gpio_dev_s *dev, bool
enable);
static int gpint_setpintype(struct gpio_dev_s *dev,
enum gpio_pintype_e pintype);
#endif
+static int gprtc_read(struct gpio_dev_s *dev, bool *value);
+static int gprtc_write(struct gpio_dev_s *dev, bool value);
/****************************************************************************
* Private Data
@@ -193,10 +199,80 @@ struct esp_dedic_gpio_config_s dedic_gpio_conf =
struct file *dedicated_gpio = NULL;
#endif
+static const struct gpio_operations_s gprtc_ops =
+{
+ .go_read = gprtc_read,
+ .go_write = gprtc_write,
+ .go_attach = NULL,
+ .go_enable = NULL,
+ .go_setpintype = NULL,
+};
+
+/* This array maps the GPIO pins used as OUTPUT */
+
+static const uint32_t g_gpiortc[GPIO_RTC_COUNT] =
+{
+ GPIO_RTC1
+};
+
+static struct espgpio_dev_s g_gprtc[GPIO_RTC_COUNT];
+
/****************************************************************************
* Private Functions
****************************************************************************/
+/****************************************************************************
+ * Name: gprtc_read
+ *
+ * Description:
+ * Read a RTC digital output pin.
+ *
+ * Parameters:
+ * dev - A pointer to the gpio driver struct.
+ * value - A pointer to store the state of the pin.
+ *
+ * Returned Value:
+ * Zero (OK).
+ *
+ ****************************************************************************/
+
+static int gprtc_read(struct gpio_dev_s *dev, bool *value)
+{
+ struct espgpio_dev_s *espgpio = (struct espgpio_dev_s *)dev;
+
+ DEBUGASSERT(espgpio != NULL && value != NULL);
+ gpioinfo("Reading...\n");
+
+ *value = esp_rtcio_read(g_gpiortc[espgpio->id]);
+ return OK;
+}
+
+/****************************************************************************
+ * Name: gprtc_write
+ *
+ * Description:
+ * Write to a RTC digital output pin.
+ *
+ * Parameters:
+ * dev - A pointer to the gpio driver struct.
+ * value - The value to be written.
+ *
+ * Returned Value:
+ * Zero (OK).
+ *
+ ****************************************************************************/
+
+static int gprtc_write(struct gpio_dev_s *dev, bool value)
+{
+ struct espgpio_dev_s *espgpio = (struct espgpio_dev_s *)dev;
+
+ DEBUGASSERT(espgpio != NULL);
+ gpioinfo("Writing %d\n", (int)value);
+
+ esp_rtcio_write(g_gpiortc[espgpio->id], value);
+ return OK;
+}
+
/****************************************************************************
* Name: gpout_read
*
@@ -553,6 +629,21 @@ int esp_gpio_init(void)
pincount++;
#endif
+ for (i = 0; i < GPIO_RTC_COUNT; i++)
+ {
+ /* Setup and register the GPIO pin */
+
+ g_gprtc[i].gpio.gp_pintype = GPIO_OUTPUT_PIN;
+ g_gprtc[i].gpio.gp_ops = &gprtc_ops;
+ g_gprtc[i].id = i;
+ gpio_pin_register(&g_gprtc[i].gpio, pincount);
+
+ /* Configure the pins that will be used as input/output */
+
+ esp_rtcio_config_gpio(g_gpiortc[i], ESP_RTC_GPIO_MODE_INPUT_OUTPUT);
+ pincount++;
+ }
+
return OK;
}
#endif /* CONFIG_DEV_GPIO && !CONFIG_GPIO_LOWER_HALF */
