boards/xtensa/esp32s2-kaluga-1: Add touch pad support
This commit is contained in:
Lucas Saavedra Vaz
Alan Carvalho de Assis
parent
4309c6693c
commit
6227cd4fd4
@ -531,7 +531,11 @@ bool esp32s2_touchread(enum touch_pad_e tp)
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leave_critical_section(flags);
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#ifdef CONFIG_ESP32S2_TOUCH_THRESHOLD_POSEDGE
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return (value < touch_pad_logic_threshold[tp]);
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#else
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return (value > touch_pad_logic_threshold[tp]);
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#endif
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}
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/****************************************************************************
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@ -5,4 +5,52 @@
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if ARCH_BOARD_ESP32S2_KALUGA_1
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config ESP32S2_TOUCH
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bool "Touch pads"
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default n
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---help---
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Enable ESP32-S2 touch pad support.
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if ESP32S2_TOUCH
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config ESP32S2_TOUCH_THRESHOLD_POSEDGE
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bool "Touch pad inverted threshold detection"
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default y
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---help---
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Detect positive edge of touch pad threshold rather than negative edge.
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config ESP32S2_TOUCH_FILTER
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bool "Touch pad filter"
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default n
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---help---
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Enable internal filter for the touch pads.
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config ESP32S2_TOUCH_DENOISE
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bool "Touch pad denoise"
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default n
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---help---
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Enable internal denoise for the touch pads.
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config ESP32S2_TOUCH_IRQ
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bool "Enable touch pad interrupts"
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select ESP32S2_RTCIO_IRQ
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select ESP32S2_RT_TIMER
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depends on ARCH_IRQBUTTONS
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default n
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---help---
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Enable interrupt support for the touch pads.
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config ESP32S2_TOUCH_IRQ_INTERVAL_MS
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int "Minimum interrupt interval (ms)"
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depends on ESP32S2_TOUCH_IRQ
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default 100
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---help---
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Minimum interval between touch pad interrupts (in milliseconds).
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As the RTC interrupts are triggered by level, this interrupt
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will be constantly set off as long as the touch pad is pressed.
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To avoid that, we disable the interrupt when it is triggered and
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set a timer for it to be re-enabled.
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endif # ESP32S2_TOUCH
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endif # ARCH_BOARD_ESP32S2_KALUGA_1
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@ -0,0 +1,53 @@
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#
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# This file is autogenerated: PLEASE DO NOT EDIT IT.
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#
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# You can use "make menuconfig" to make any modifications to the installed .config file.
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# You can then do "make savedefconfig" to generate a new defconfig file that includes your
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# modifications.
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#
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# CONFIG_ARCH_LEDS is not set
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# CONFIG_NSH_ARGCAT is not set
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# CONFIG_NSH_CMDOPT_HEXDUMP is not set
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CONFIG_ARCH="xtensa"
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CONFIG_ARCH_BOARD="esp32s2-kaluga-1"
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CONFIG_ARCH_BOARD_COMMON=y
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CONFIG_ARCH_BOARD_ESP32S2_KALUGA_1=y
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CONFIG_ARCH_BUTTONS=y
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CONFIG_ARCH_CHIP="esp32s2"
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CONFIG_ARCH_CHIP_ESP32S2=y
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CONFIG_ARCH_CHIP_ESP32S2WROVER=y
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CONFIG_ARCH_IRQBUTTONS=y
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CONFIG_ARCH_STACKDUMP=y
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CONFIG_ARCH_XTENSA=y
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CONFIG_BOARD_LOOPSPERMSEC=16717
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CONFIG_BUILTIN=y
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CONFIG_ESP32S2_GPIO_IRQ=y
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CONFIG_ESP32S2_TOUCH=y
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CONFIG_ESP32S2_TOUCH_IRQ=y
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CONFIG_ESP32S2_UART0=y
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CONFIG_EXAMPLES_BUTTONS=y
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CONFIG_FS_PROCFS=y
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CONFIG_HAVE_CXX=y
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CONFIG_HAVE_CXXINITIALIZE=y
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CONFIG_IDLETHREAD_STACKSIZE=3072
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CONFIG_INIT_ENTRYPOINT="nsh_main"
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CONFIG_INPUT=y
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CONFIG_INPUT_BUTTONS=y
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CONFIG_INPUT_BUTTONS_LOWER=y
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CONFIG_INTELHEX_BINARY=y
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CONFIG_NSH_ARCHINIT=y
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CONFIG_NSH_BUILTIN_APPS=y
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CONFIG_NSH_FILEIOSIZE=512
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CONFIG_NSH_LINELEN=64
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CONFIG_NSH_READLINE=y
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CONFIG_PREALLOC_TIMERS=4
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CONFIG_RAM_SIZE=114688
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CONFIG_RAM_START=0x20000000
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CONFIG_RR_INTERVAL=200
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CONFIG_SCHED_WAITPID=y
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CONFIG_SPI=y
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CONFIG_START_DAY=6
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CONFIG_START_MONTH=12
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CONFIG_START_YEAR=2011
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CONFIG_SYSTEM_NSH=y
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CONFIG_UART0_SERIAL_CONSOLE=y
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@ -43,6 +43,29 @@
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# define BOARD_CLOCK_FREQUENCY 80000000
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#endif
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/* Button definitions *******************************************************/
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#define BUTTON_BTN1 0 /* BUTTON_BOOT */
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#define BUTTON_BTN1_BIT (1 << BUTTON_BTN1)
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#ifdef CONFIG_ESP32S2_TOUCH
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# define BUTTON_BTN2 1 /* TOUCHPAD_PHOTO */
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# define BUTTON_BTN2_BIT (1 << BUTTON_BTN2)
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# define BUTTON_BTN3 2 /* TOUCHPAD_PLAY */
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# define BUTTON_BTN3_BIT (1 << BUTTON_BTN3)
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# define BUTTON_BTN4 3 /* TOUCHPAD_RECORD */
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# define BUTTON_BTN4_BIT (1 << BUTTON_BTN4)
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# define BUTTON_BTN5 4 /* TOUCHPAD_NETWORK */
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# define BUTTON_BTN5_BIT (1 << BUTTON_BTN5)
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# define BUTTON_BTN6 5 /* TOUCHPAD_VOLUP */
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# define BUTTON_BTN6_BIT (1 << BUTTON_BTN6)
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# define BUTTON_BTN7 6 /* TOUCHPAD_VOLDN */
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# define BUTTON_BTN7_BIT (1 << BUTTON_BTN7)
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# define NUM_BUTTONS 7
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#else
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# define NUM_BUTTONS 1
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#endif
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/* LED definitions **********************************************************/
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/* Define how many LEDs this board has (needed by userleds) */
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@ -45,6 +45,10 @@ ifeq ($(CONFIG_ESP32S2_SPI),y)
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CSRCS += esp32s2_board_spi.c
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endif
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ifeq ($(CONFIG_ARCH_BUTTONS),y)
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CSRCS += esp32s2_buttons.c
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endif
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DEPPATH += --dep-path board
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VPATH += :board
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CFLAGS += $(shell $(INCDIR) "$(CC)" $(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board)
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@ -33,11 +33,17 @@
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* Pre-processor Definitions
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****************************************************************************/
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/* ESP32S2-DevKitC GPIOs ****************************************************/
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/* ESP32S2-Kaluga-1 GPIOs ***************************************************/
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/* BOOT Button */
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/* Buttons */
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#define BUTTON_BOOT 0
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#define BUTTON_BOOT 0
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#define TP_PHOTO_CHANNEL 6
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#define TP_PLAY_CHANNEL 2
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#define TP_RECORD_CHANNEL 5
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#define TP_NETWORK_CHANNEL 11
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#define TP_VOLUP_CHANNEL 1
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#define TP_VOLDN_CHANNEL 3
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/* TIMERS */
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@ -206,6 +206,16 @@ int esp32s2_bringup(void)
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}
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#endif
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#ifdef CONFIG_INPUT_BUTTONS
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/* Register the BUTTON driver */
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ret = btn_lower_initialize("/dev/buttons");
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
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}
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#endif
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/* If we got here then perhaps not all initialization was successful, but
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* at least enough succeeded to bring-up NSH with perhaps reduced
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* capabilities.
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342
boards/xtensa/esp32s2/esp32s2-kaluga-1/src/esp32s2_buttons.c
Normal file
342
boards/xtensa/esp32s2/esp32s2-kaluga-1/src/esp32s2_buttons.c
Normal file
@ -0,0 +1,342 @@
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/****************************************************************************
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* boards/xtensa/esp32s2/esp32s2-kaluga-1/src/esp32s2_buttons.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* 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
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* "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
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* 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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <debug.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <nuttx/arch.h>
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#include <arch/board/board.h>
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#include <nuttx/board.h>
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#include <nuttx/irq.h>
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#include <nuttx/signal.h>
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#include <arch/irq.h>
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#include "esp32s2_gpio.h"
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#include "esp32s2_rtc_gpio.h"
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#include "esp32s2_touch.h"
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#include "esp32s2-kaluga-1.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifndef ARRAY_SIZE
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# define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
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#endif
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#define TOUCHPAD_REFH (TOUCH_HVOLT_2V7)
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#define TOUCHPAD_REFL (TOUCH_LVOLT_0V5)
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#define TOUCHPAD_ATTEN (TOUCH_HVOLT_ATTEN_1V)
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#define TOUCHPAD_SLOPE (TOUCH_SLOPE_7)
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#define TOUCHPAD_TIE_OPT (TOUCH_TIE_OPT_LOW)
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#define TOUCHPAD_FSM_MODE (TOUCH_FSM_MODE_TIMER)
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#define TOUCHPAD_DENOISE_GRADE (TOUCH_DENOISE_BIT4)
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#define TOUCHPAD_DENOISE_CAP (TOUCH_DENOISE_CAP_L4)
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#define TOUCHPAD_FILTER_MODE (TOUCH_FILTER_IIR_16)
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#define TOUCHPAD_FILTER_DEBOUNCE (1)
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#define TOUCHPAD_FILTER_NOISE (0)
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#define TOUCHPAD_FILTER_JITTER (4)
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#define TOUCHPAD_FILTER_SMH (TOUCH_SMOOTH_IIR_2)
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#define TOUCHPAD_THRESHOLD (30000)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct button_type_s
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{
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bool is_touchpad;
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union
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{
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int channel;
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int gpio;
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} input;
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};
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/****************************************************************************
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* Private Data
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****************************************************************************/
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#ifdef CONFIG_ESP32S2_TOUCH
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static const struct touch_config_s tp_config =
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{
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.refh = TOUCHPAD_REFH,
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.refl = TOUCHPAD_REFL,
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.atten = TOUCHPAD_ATTEN,
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.slope = TOUCHPAD_SLOPE,
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.tie_opt = TOUCHPAD_TIE_OPT,
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.fsm_mode = TOUCHPAD_FSM_MODE,
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# ifdef CONFIG_ESP32S2_TOUCH_FILTER
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.filter_mode = TOUCHPAD_FILTER_MODE,
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.filter_debounce_cnt = TOUCHPAD_FILTER_DEBOUNCE,
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.filter_noise_thr = TOUCHPAD_FILTER_NOISE,
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.filter_jitter_step = TOUCHPAD_FILTER_JITTER,
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.filter_smh_lvl = TOUCHPAD_FILTER_SMH,
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# endif
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# ifdef CONFIG_ESP32S2_TOUCH_DENOISE
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.denoise_grade = TOUCHPAD_DENOISE_GRADE,
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.denoise_cap_level = TOUCHPAD_DENOISE_CAP
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# endif
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};
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#endif
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static const struct button_type_s g_buttons[] =
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{
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{
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.is_touchpad = false,
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.input.gpio = BUTTON_BOOT
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},
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#ifdef CONFIG_ESP32S2_TOUCH
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{
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.is_touchpad = true,
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.input.channel = TP_PHOTO_CHANNEL
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},
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{
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.is_touchpad = true,
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.input.channel = TP_PLAY_CHANNEL
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},
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{
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.is_touchpad = true,
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.input.channel = TP_RECORD_CHANNEL
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},
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{
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.is_touchpad = true,
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.input.channel = TP_NETWORK_CHANNEL
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},
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{
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.is_touchpad = true,
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.input.channel = TP_VOLUP_CHANNEL
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},
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{
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.is_touchpad = true,
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.input.channel = TP_VOLDN_CHANNEL
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}
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#endif
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_button_initialize
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*
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* Description:
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* board_button_initialize() must be called to initialize button resources.
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* After that, board_buttons() may be called to collect the current state
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* of all buttons or board_button_irq() may be called to register button
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* interrupt handlers.
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*
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****************************************************************************/
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uint32_t board_button_initialize(void)
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{
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#ifdef CONFIG_ESP32S2_TOUCH
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esp32s2_configtouch(TP_PHOTO_CHANNEL, tp_config);
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esp32s2_configtouch(TP_PLAY_CHANNEL, tp_config);
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esp32s2_configtouch(TP_RECORD_CHANNEL, tp_config);
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esp32s2_configtouch(TP_NETWORK_CHANNEL, tp_config);
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esp32s2_configtouch(TP_VOLUP_CHANNEL, tp_config);
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esp32s2_configtouch(TP_VOLDN_CHANNEL, tp_config);
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esp32s2_touchsetthreshold(TP_PHOTO_CHANNEL, TOUCHPAD_THRESHOLD);
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esp32s2_touchsetthreshold(TP_PLAY_CHANNEL, TOUCHPAD_THRESHOLD);
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esp32s2_touchsetthreshold(TP_RECORD_CHANNEL, TOUCHPAD_THRESHOLD);
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esp32s2_touchsetthreshold(TP_NETWORK_CHANNEL, TOUCHPAD_THRESHOLD);
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esp32s2_touchsetthreshold(TP_VOLUP_CHANNEL, TOUCHPAD_THRESHOLD);
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esp32s2_touchsetthreshold(TP_VOLDN_CHANNEL, TOUCHPAD_THRESHOLD);
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#endif
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esp32s2_configgpio(BUTTON_BOOT, INPUT_FUNCTION_3 | PULLUP);
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return NUM_BUTTONS;
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}
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/****************************************************************************
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* Name: board_buttons
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*
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* Description:
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* After board_button_initialize() has been called, board_buttons() may be
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* called to collect the state of all buttons. board_buttons() returns an
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* 8-bit bit set with each bit associated with a button. See the
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* BUTTON_*_BIT definitions in board.h for the meaning of each bit.
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*
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****************************************************************************/
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uint32_t board_buttons(void)
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{
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uint8_t ret = 0;
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bool b0;
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bool b1;
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int n;
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for (uint8_t btn_id = 0; btn_id < ARRAY_SIZE(g_buttons); btn_id++)
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{
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iinfo("Reading button %d\n", btn_id);
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const struct button_type_s button_info = g_buttons[btn_id];
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n = 0;
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if (button_info.is_touchpad)
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{
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b0 = esp32s2_touchread(button_info.input.channel);
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}
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else
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{
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b0 = esp32s2_gpioread(button_info.input.gpio);
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for (int i = 0; i < 10; i++)
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{
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up_mdelay(1);
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b1 = esp32s2_gpioread(button_info.input.gpio);
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if (b0 == b1)
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{
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n++;
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}
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else
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{
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n = 0;
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}
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if (3 == n)
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{
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break;
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}
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b0 = b1;
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}
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}
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iinfo("b=%d n=%d\n", b0, n);
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/* Low value means that the button is pressed */
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if (!b0)
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{
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ret |= (1 << btn_id);
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}
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}
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return ret;
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}
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/****************************************************************************
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* Name: board_button_irq
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*
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* Description:
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* board_button_irq() may be called to register an interrupt handler that
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* will be called when a button is depressed or released. The ID value is
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* a button enumeration value that uniquely identifies a button resource.
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* See the BUTTON_* definitions in board.h for the meaning of enumeration
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* value.
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_IRQBUTTONS
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int board_button_irq(int id, xcpt_t irqhandler, void *arg)
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{
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DEBUGASSERT(id < ARRAY_SIZE(g_buttons));
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int ret;
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struct button_type_s button_info = g_buttons[id];
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#ifdef CONFIG_ESP32S2_TOUCH_IRQ
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if (button_info.is_touchpad)
|
||||
{
|
||||
int channel = button_info.input.channel;
|
||||
int irq = ESP32S2_TOUCHPAD2IRQ(channel);
|
||||
|
||||
if (NULL != irqhandler)
|
||||
{
|
||||
/* Make sure the interrupt is disabled */
|
||||
|
||||
esp32s2_touchirqdisable(irq);
|
||||
|
||||
esp32s2_touchregisterreleasecb(irqhandler);
|
||||
ret = irq_attach(irq, irqhandler, arg);
|
||||
if (ret < 0)
|
||||
{
|
||||
syslog(LOG_ERR, "ERROR: irq_attach() failed: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
iinfo("Attach %p to touch pad %d\n", irqhandler, channel);
|
||||
|
||||
iinfo("Enabling the interrupt\n");
|
||||
|
||||
esp32s2_touchirqenable(irq);
|
||||
}
|
||||
else
|
||||
{
|
||||
iinfo("Disabled interrupts from touch pad %d\n", channel);
|
||||
esp32s2_touchirqdisable(irq);
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
int pin = button_info.input.gpio;
|
||||
int irq = ESP32S2_PIN2IRQ(pin);
|
||||
|
||||
if (NULL != irqhandler)
|
||||
{
|
||||
/* Make sure the interrupt is disabled */
|
||||
|
||||
esp32s2_gpioirqdisable(irq);
|
||||
|
||||
ret = irq_attach(irq, irqhandler, arg);
|
||||
if (ret < 0)
|
||||
{
|
||||
syslog(LOG_ERR, "ERROR: irq_attach() failed: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
gpioinfo("Attach %p to pin %d\n", irqhandler, pin);
|
||||
|
||||
gpioinfo("Enabling the interrupt\n");
|
||||
|
||||
/* Configure the interrupt for rising and falling edges */
|
||||
|
||||
esp32s2_gpioirqenable(irq, GPIO_INTR_ANYEDGE);
|
||||
}
|
||||
else
|
||||
{
|
||||
gpioinfo("Disabled interrupts from pin %d\n", pin);
|
||||
esp32s2_gpioirqdisable(irq);
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user