8000 Merge pull request #6 from jlz3008/new_interrupt_example · enginux/source-code-examples@69b1fcc · GitHub
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Commit 69b1fcc

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zaryazarya
committed
Merge pull request esp8266#6 from jlz3008/new_interrupt_example
Interrupt example
2 parents 132421c + 17e6530 commit 69b1fcc

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4 files changed

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‎interrupt_example/.gitignore

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build
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firmware
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testinterrupt.*

‎interrupt_example/Makefile

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# tnx to mamalala
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# Changelog
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# Changed the variables to include the header file directory
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# Added global var for the XTENSA tool root
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# Added variable for esptool bauds. Some modules don't work with default speed.
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#
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# This make file still needs some work.
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#
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# Updated for SDK 0.9.3
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#
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# Output directors to store intermediate compiled files
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# relative to the project directory
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BUILD_BASE = build
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FW_BASE = firmware
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# Base directory for the compiler
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XTENSA_TOOLS_ROOT ?= /opt/Espressif/crosstool-NG/builds/xtensa-lx106-elf/bin
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# base directory of the ESP8266 SDK package, absolute
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SDK_BASE ?= /opt/Espressif/ESP8266_SDK
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#Esptool.py path and port
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ESPTOOL ?= esptool.py
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ESPPORT ?= /dev/ttyUSB0
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ESPBAUD ?= 115200
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# name for the target project
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TARGET = app
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# which modules (subdirectories) of the project to include in compiling
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MODULES = driver user
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EXTRA_INCDIR = include /opt/Espressif/include
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# libraries used in this project, mainly provided by the SDK
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LIBS = c gcc hal pp phy net80211 lwip wpa main
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# compiler flags using during compilation of source files
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CFLAGS = -Os -g -O2 -Wpointer-arith -Wundef -Werror -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mtext-section-literals -D__ets__ -DICACHE_FLASH
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# linker flags used to generate the main object file
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LDFLAGS = -nostdlib -Wl,--no-check-sections -u call_user_start -Wl,-static
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# linker script used for the above linkier step
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LD_SCRIPT = eagle.app.v6.ld
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# various paths from the SDK used in this project
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SDK_LIBDIR = lib
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SDK_LDDIR = ld
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SDK_INCDIR = include include/json
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# we create two different files for uploading into the flash
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# these are the names and options to generate them
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FW_FILE_1 = 0x00000
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FW_FILE_1_ARGS = -bo $@ -bs .text -bs .data -bs .rodata -bc -ec
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FW_FILE_2 = 0x40000
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FW_FILE_2_ARGS = -es .irom0.text $@ -ec
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# select which tools to use as compiler, librarian and linker
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CC := $(XTENSA_TOOLS_ROOT)/xtensa-lx106-elf-gcc
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AR := $(XTENSA_TOOLS_ROOT)/xtensa-lx106-elf-ar
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LD := $(XTENSA_TOOLS_ROOT)/xtensa-lx106-elf-gcc
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####
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#### no user configurable options below here
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####
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FW_TOOL ?= /usr/bin/esptool
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SRC_DIR := $(MODULES)
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BUILD_DIR := $(addprefix $(BUILD_BASE)/,$(MODULES))
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SDK_LIBDIR := $(addprefix $(SDK_BASE)/,$(SDK_LIBDIR))
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SDK_INCDIR := $(addprefix -I$(SDK_BASE)/,$(SDK_INCDIR))
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SRC := $(foreach sdir,$(SRC_DIR),$(wildcard $(sdir)/*.c))
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OBJ := $(patsubst %.c,$(BUILD_BASE)/%.o,$(SRC))
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LIBS := $(addprefix -l,$(LIBS))
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APP_AR := $(addprefix $(BUILD_BASE)/,$(TARGET)_app.a)
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TARGET_OUT := $(addprefix $(BUILD_BASE)/,$(TARGET).out)
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LD_SCRIPT := $(addprefix -T$(SDK_BASE)/$(SDK_LDDIR)/,$(LD_SCRIPT))
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INCDIR := $(addprefix -I,$(SRC_DIR))
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EXTRA_INCDIR := $(addprefix -I,$(EXTRA_INCDIR))
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MODULE_INCDIR := $(addsuffix /include,$(INCDIR))
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FW_FILE_1 := $(addprefix $(FW_BASE)/,$(FW_FILE_1).bin)
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FW_FILE_2 := $(addprefix $(FW_BASE)/,$(FW_FILE_2).bin)
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V ?= $(VERBOSE)
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ifeq ("$(V)","1")
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Q :=
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vecho := @true
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else
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Q := @
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vecho := @echo
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endif
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vpath %.c $(SRC_DIR)
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define compile-objects
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$1/%.o: %.c
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$(vecho) "CC $$<"
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$(Q) $(CC) $(INCDIR) $(MODULE_INCDIR) $(EXTRA_INCDIR) $(SDK_INCDIR) $(CFLAGS) -c $$< -o $$@
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endef
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.PHONY: all checkdirs flash clean
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all: checkdirs $(TARGET_OUT) $(FW_FILE_1) $(FW_FILE_2)
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$(FW_FILE_1): $(TARGET_OUT)
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$(vecho) "FW $@"
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$(Q) $(FW_TOOL) -eo $(TARGET_OUT) $(FW_FILE_1_ARGS)
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$(FW_FILE_2): $(TARGET_OUT)
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$(vecho) "FW $@"
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$(Q) $(FW_TOOL) -eo $(TARGET_OUT) $(FW_FILE_2_ARGS)
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$(TARGET_OUT): $(APP_AR)
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$(vecho) "LD $@"
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$(Q) $(LD) -L$(SDK_LIBDIR) $(LD_SCRIPT) $(LDFLAGS) -Wl,--start-group $(LIBS) $(APP_AR) -Wl,--end-group -o $@
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$(APP_AR): $(OBJ)
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$(vecho) "AR $@"
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$(Q) $(AR) cru $@ $^
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checkdirs: $(BUILD_DIR) $(FW_BASE)
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$(BUILD_DIR):
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$(Q) mkdir -p $@
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firmware:
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$(Q) mkdir -p $@
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flash: firmware/0x00000.bin firmware/0x40000.bin
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-$(ESPTOOL) --baud $(ESPBAUD) --port $(ESPPORT) write_flash 0x00000 firmware/0x00000.bin 0x40000 firmware/0x40000.bin
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clean:
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$(Q) rm -f $(APP_AR)
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$(Q) rm -f $(TARGET_OUT)
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$(Q) rm -rf $(BUILD_DIR)
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$(Q) rm -rf $(BUILD_BASE)
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$(Q) rm -f $(FW_FILE_1)
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$(Q) rm -f $(FW_FILE_2)
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$(Q) rm -rf $(FW_BASE)
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$(foreach bdir,$(BUILD_DIR),$(eval $(call compile-objects,$(bdir))))

‎interrupt_example/user/user_config.h

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‎interrupt_example/user/user_main.c

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#include "ets_sys.h"
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#include "osapi.h"
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#include "gpio.h"
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#include "os_type.h"
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#include "user_interface.h"
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#define user_procTaskPrio 0
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#define user_procTaskQueueLen 1
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os_event_t user_procTaskQueue[user_procTaskQueueLen];
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static void loop(os_event_t *events);
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// variable modified indirectly by interrupt handler
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volatile int whatyouwant;
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// gpio interrupt handler. See below
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LOCAL void gpio_intr_handler(int * dummy);
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//-------------------------------------------------------------------------------------------------
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// loop function will be execute by "os" periodically
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static void ICACHE_FLASH_ATTR loop(os_event_t *events)
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{
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static int level;
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os_printf("What you want %d \r\n",whatyouwant);
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// change GPIO 2 level
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level = !level;
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GPIO_OUTPUT_SET(GPIO_ID_PIN(2), ((level) ? 1 : 0));
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// Delay
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os_delay_us(100000);
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// turn again
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system_os_post(user_procTaskPrio, 0, 0 );
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}
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//-------------------------------------------------------------------------------------------------
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//Init function
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void ICACHE_FLASH_ATTR user_init()
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{
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// Initialize UART0 to use as debug
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uart_div_modify(0, UART_CLK_FREQ / 9600);
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os_printf(
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"GPIO Interrupt ESP8266 test\r\n"
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"---------------------------\r\n"
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" This program out a square wave on gpio2 and count edges for gpio0\r\n"
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" The program report count edges gpio0 periodically.\r\n"
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" You Can\r\n"
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" 1.- Connect GPIO0 to GPIO2 so you can see increment count edge periodically\r\n"
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" 2.- Unconnect GPIO0 from GPIO2 so you can see stop count edge\r\n"
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" 3.- Connect GPIO0 to ground to increment count edge\r\n"
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);
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// Initialize the GPIO subsystem.
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gpio_init();
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// =================================================
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// Initialize GPIO2 and GPIO0 as GPIO
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// =================================================
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//
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//
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// PIN_FUNC_SELECT() defined in eagle_soc.h
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// PERIPHS_IO_MUX_... for each pin defined in eagle_soc.h
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// FUNC_... for each PERIPHS macros defined in eagle_soc.h
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//
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// From eagle_soc.h:
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// GPIO0 only can be GPIO
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// GPIO2 can be GPIO, TXD from uart0, or TXD from uart1
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//
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// #define PERIPHS_IO_MUX_GPIO0_U (PERIPHS_IO_MUX + 0x34)
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// #define FUNC_GPIO0 0
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// #define PERIPHS_IO_MUX_GPIO2_U (PERIPHS_IO_MUX + 0x38)
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// #define FUNC_GPIO2 0
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// #define FUNC_U1TXD_BK 2
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// #define FUNC_U0TXD_BK 4
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//
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PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO0_U, FUNC_GPIO0);
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PIN_FUNC_SELECT(PERIPHS_IO_MUX_GPIO2_U, FUNC_GPIO2);
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// You can select enable/disable internal pullup/pulldown for each pin
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//
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// PIN_PULLUP_DIS(PIN_NAME)
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// PIN_PULLUP_EN(PIN_NAME)
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// PIN_PULLDWN_DIS(PIN_NAME)
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// PIN_PULLDWN_EN(PIN_NAME)
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PIN_PULLUP_DIS(PERIPHS_IO_MUX_GPIO0_U);
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PIN_PULLDWN_DIS(PERIPHS_IO_MUX_GPIO0_U);
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PIN_PULLUP_EN(PERIPHS_IO_MUX_GPIO2_U);
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//
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// void gpio_output_set(uint32 set_mask, uint32 clear_mask, uint32 enable_mask, uint32 disable_mask)
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//
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// set status and direction pin by mask gpio id pin.
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gpio_output_set(0, GPIO_ID_PIN(2), GPIO_ID_PIN(2), GPIO_ID_PIN(0)); // set gpio 2 as output and low. set gpio 0 as input
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// =================================================
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// Activate gpio interrupt for gpio2
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// =================================================
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// Disable interrupts by GPIO
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ETS_GPIO_INTR_DISABLE();
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// Attach interrupt handle to gpio interrupts.
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// You can set a void pointer that will be passed to interrupt handler each interrupt
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ETS_GPIO_INTR_ATTACH(gpio_intr_handler, &whatyouwant);
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// void gpio_register_set(uint32 reg_id, uint32 value);
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//
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// From include file
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// Set the specified GPIO register to the specified value.
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// This is a very general and powerful interface that is not
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// expected to be used during normal operation. It is intended
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// mainly for debug, or for unusual requirements.
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//
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// All people repeat this mantra but I don't know what it means
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//
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gpio_register_set(GPIO_PIN_ADDR(0),
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GPIO_PIN_INT_TYPE_SET(GPIO_PIN_INTR_DISABLE) |
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GPIO_PIN_PAD_DRIVER_SET(GPIO_PAD_DRIVER_DISABLE) |
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GPIO_PIN_SOURCE_SET(GPIO_AS_PIN_SOURCE));
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// clear gpio status. Say ESP8266EX SDK Programming Guide in 5.1.6. GPIO interrupt handler
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GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, BIT(0));
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// enable interrupt for his GPIO
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// GPIO_PIN_INTR_... defined in gpio.h
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gpio_pin_intr_state_set(GPIO_ID_PIN(0), GPIO_PIN_INTR_ANYEGDE);
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ETS_GPIO_INTR_ENABLE();
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//Start os task
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system_os_task(loop, user_procTaskPrio,user_procTaskQueue, user_procTaskQueueLen);
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system_os_post(user_procTaskPrio, 0, 0 );
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}
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//-------------------------------------------------------------------------------------------------
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// interrupt handler
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// this function will be executed on any edge of GPIO0
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LOCAL void gpio_intr_handler(int * dummy)
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{
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// clear gpio status. Say ESP8266EX SDK Programming Guide in 5.1.6. GPIO interrupt handler
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uint32 gpio_status = GPIO_REG_READ(GPIO_STATUS_ADDRESS);
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// if the interrupt was by GPIO0
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if (gpio_status & BIT(0))
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{
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// disable interrupt for GPIO0
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gpio_pin_intr_state_set(GPIO_ID_PIN(0), GPIO_PIN_INTR_DISABLE);
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// Do something, for example, increment whatyouwant indirectly
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(*dummy)++;
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//clear interrupt status for GPIO0
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GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, gpio_status & BIT(0));
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// Reactivate interrupts for GPIO0
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gpio_pin_intr_state_set(GPIO_ID_PIN(0), GPIO_PIN_INTR_ANYEGDE);
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}
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}
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