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dts: xtensa: espressif: esp32s3: add USB CDC support

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Enable USB CDC with self stack support for esp32s3.

Signed-off-by: Lucas Tamborrino <lucas.tamborrino@espressif.com>
This commit is contained in:
Lucas Tamborrino 2023-04-04 15:35:38 -03:00 • committed by Fabio Baltieri
commit ae6b398f51
3 changed files with 17 additions and 1 deletions
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2
boards/xtensa/esp32s3_devkitm/doc/index.rst
View file

@ -106,6 +106,8 @@ Current Zephyr's ESP32-S3-DevKitM board supports the following features:
+------------+------------+-------------------------------------+
| GDMA | on-chip | dma |
+------------+------------+-------------------------------------+
| USB-CDC | on-chip | serial |
+------------+------------+-------------------------------------+
Prerequisites
-------------

4
boards/xtensa/esp32s3_devkitm/esp32s3_devkitm.dts
View file

@ -117,6 +117,10 @@
status = "okay";
};
&usb_serial {
status = "disabled";
};
&flash0 {
status = "okay";
partitions {

12
drivers/serial/serial_esp32_usb.c
View file

@ -13,11 +13,21 @@
#include <errno.h>
#include <soc.h>
#include <zephyr/drivers/uart.h>
#if defined(CONFIG_SOC_ESP32C3)
#include <zephyr/drivers/interrupt_controller/intc_esp32c3.h>
#else
#include <zephyr/drivers/interrupt_controller/intc_esp32.h>
#endif
#include <zephyr/drivers/clock_control.h>
#include <zephyr/sys/util.h>
#include <esp_attr.h>
#ifdef CONFIG_SOC_ESP32C3
#define ISR_HANDLER isr_handler_t
#else
#define ISR_HANDLER intr_handler_t
#endif
#define USBSERIAL_TIMEOUT_MAX_US 50000
static int s_usbserial_timeout;
@ -90,7 +100,7 @@ static int serial_esp32_usb_init(const struct device *dev)
int ret = clock_control_on(config->clock_dev, config->clock_subsys);
#ifdef CONFIG_UART_INTERRUPT_DRIVEN
data->irq_line = esp_intr_alloc(config->irq_source, 0, (isr_handler_t)serial_esp32_usb_isr,
data->irq_line = esp_intr_alloc(config->irq_source, 0, (ISR_HANDLER)serial_esp32_usb_isr,
(void *)dev, NULL);
#endif
return ret;