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Shriyans406Shriyans406
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boards/xtensa/esp32: Add LED support for
Heltec WiFi LoRa 32 board This commit adds the User LED driver support for the Heltec WiFi LoRa 32 board. It implements the lower-half driver, maps the onboard white LED to GPIO 25, and adds the necessary build system and initialization logic. Signed-off-by: Shriyans Sahoo <shriyans.s.sahoo@gmail.com>
1 parent 8e91dd6 commit 2fbefa9

7 files changed

Lines changed: 124 additions & 42 deletions

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‎boards/xtensa/esp32/esp32-devkitc/include/board.h‎

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@@ -48,6 +48,7 @@
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/* Define how many LEDs this board has (needed by userleds) */
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#define BOARD_NLEDS 1
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#define GPIO_LED1 2 /* Typical On-board LED is on GPIO 2 */
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/* GPIO pins used by the GPIO Subsystem */
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‎boards/xtensa/esp32/esp32-devkitc/src/esp32_userleds.c‎

Lines changed: 15 additions & 39 deletions
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@@ -23,16 +23,10 @@
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/****************************************************************************
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* Included Files
2525
****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <nuttx/debug.h>
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#include <nuttx/board.h>
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#include <arch/board/board.h>
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#include "espressif/esp_gpio.h"
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#include "esp32-devkitc.h"
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@@ -42,11 +36,7 @@
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/* This array maps an LED number to GPIO pin configuration */
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45-
static const uint32_t g_ledcfg[BOARD_NLEDS] =
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{
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GPIO_LED1,
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};
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static const uint32_t g_ledcfg[BOARD_NLEDS] = { GPIO_LED1 };
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/****************************************************************************
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* Public Functions
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****************************************************************************/
@@ -55,42 +45,28 @@ static const uint32_t g_ledcfg[BOARD_NLEDS] =
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* Name: board_userled_initialize
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****************************************************************************/
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uint32_t board_userled_initialize(void)
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{
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uint8_t i;
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for (i = 0; i < BOARD_NLEDS; i++)
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{
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esp_configgpio(g_ledcfg[i], OUTPUT);
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}
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uint32_t board_userled_initialize(void) {
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for (int i = 0; i < BOARD_NLEDS; i++) {
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esp_configgpio(g_ledcfg[i], OUTPUT);
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}
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return BOARD_NLEDS;
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}
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/****************************************************************************
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* Name: board_userled
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****************************************************************************/
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void board_userled(int led, bool ledon)
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{
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if ((unsigned)led < BOARD_NLEDS)
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{
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esp_gpiowrite(g_ledcfg[led], ledon);
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}
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}
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void board_userled(int led, bool ledon) {
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if ((unsigned)led < BOARD_NLEDS) {
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esp_gpiowrite(g_ledcfg[led], ledon);
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}
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}
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/****************************************************************************
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* Name: board_userled_all
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****************************************************************************/
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void board_userled_all(uint32_t ledset)
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{
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uint8_t i;
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/* Configure LED1-8 GPIOs for output */
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for (i = 0; i < BOARD_NLEDS; i++)
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{
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esp_gpiowrite(g_ledcfg[i], (ledset & (1 << i)) != 0);
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}
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}
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void board_userled_all(uint32_t ledset) {
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for (int i = 0; i < BOARD_NLEDS; i++) {
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esp_gpiowrite(g_ledcfg[i], (ledset & (1 << i)) != 0);
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}
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}

‎boards/xtensa/esp32/heltec_wifi_lora32/include/board.h‎

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Original file line numberDiff line numberDiff line change
@@ -48,6 +48,7 @@
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/* Define how many LEDs this board has (needed by userleds) */
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#define BOARD_NLEDS 1
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#define GPIO_LED1 25 /* White LED on Heltec WiFi LoRa 32 */
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/* GPIO pins used by the GPIO Subsystem */
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‎boards/xtensa/esp32/heltec_wifi_lora32/src/Make.defs‎

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@@ -34,3 +34,6 @@ DEPPATH += --dep-path board
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VPATH += :board
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CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board
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ifeq ($(CONFIG_USERLED),y)
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CSRCS += esp32_userleds.c
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endif

‎boards/xtensa/esp32/heltec_wifi_lora32/src/esp32_bringup.c‎

Lines changed: 13 additions & 1 deletion
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@@ -32,10 +32,14 @@
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/types.h>
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#include <nuttx/debug.h>
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#include <errno.h>
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#include <nuttx/debug.h>
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#include <nuttx/board.h>
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#ifdef CONFIG_USERLED
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# include <nuttx/leds/userled.h>
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#endif
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#include "esp32_start.h"
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#ifdef CONFIG_ESPRESSIF_HR_TIMER
@@ -110,6 +114,14 @@ int esp32_bringup(void)
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* capabilities.
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*/
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#ifdef CONFIG_USERLED
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ret = userled_lower_initialize("/dev/userleds");
119+
if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: userled_lower_initialize() failed: %d\n", ret);
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}
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#endif
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UNUSED(ret);
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return OK;
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}

‎boards/xtensa/esp32/heltec_wifi_lora32/src/esp32_userleds.c‎

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/****************************************************************************
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* boards/xtensa/esp32/heltec_wifi_lora32/src/esp32_userleds.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
7+
* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
10+
* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
18+
* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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23+
/****************************************************************************
24+
* Included Files
25+
****************************************************************************/
26+
27+
#include <nuttx/config.h>
28+
29+
#include <stdbool.h>
30+
31+
#include <nuttx/board.h>
32+
#include <arch/board/board.h>
33+
34+
#include "espressif/esp_gpio.h"
35+
#include "heltec_wifi_lora32.h"
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37+
/****************************************************************************
38+
* Private Data
39+
****************************************************************************/
40+
41+
static const uint32_t g_ledcfg[BOARD_NLEDS] =
42+
{
43+
GPIO_LED1,
44+
};
45+
46+
/****************************************************************************
47+
* Public Functions
48+
****************************************************************************/
49+
50+
/****************************************************************************
51+
* Name: board_userled_initialize
52+
****************************************************************************/
53+
54+
uint32_t board_userled_initialize(void)
55+
{
56+
int i;
57+
58+
for (i = 0; i < BOARD_NLEDS; i++)
59+
{
60+
esp_configgpio(g_ledcfg[i], OUTPUT);
61+
}
62+
63+
return BOARD_NLEDS;
64+
}
65+
66+
/****************************************************************************
67+
* Name: board_userled
68+
****************************************************************************/
69+
70+
void board_userled(int led, bool ledon)
71+
{
72+
if ((unsigned int)led < BOARD_NLEDS)
73+
{
74+
esp_gpiowrite(g_ledcfg[led], ledon);
75+
}
76+
}
77+
78+
/****************************************************************************
79+
* Name: board_userled_all
80+
****************************************************************************/
81+
82+
void board_userled_all(uint32_t ledset)
83+
{
84+
int i;
85+
86+
for (i = 0; i < BOARD_NLEDS; i++)
87+
{
88+
esp_gpiowrite(g_ledcfg[i], (ledset & (1 << i)) != 0);
89+
}
90+
}

‎boards/xtensa/esp32/heltec_wifi_lora32/src/heltec_wifi_lora32.h‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -49,10 +49,9 @@
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/* LED
5050
*
5151
* This is an externally connected LED used for testing.
52+
* (Moved to include/board.h)
5253
*/
5354

54-
#define GPIO_LED1 2
55-
5655
/* PCNT Quadrature Encoder IDs */
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#define PCNT_QE0_ID 0

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