485 lines
15 KiB
C
485 lines
15 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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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,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "esp32-hal-gpio.h"
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#include "pins_arduino.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "esp_attr.h"
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#include "soc/gpio_reg.h"
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#include "soc/io_mux_reg.h"
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#include "soc/gpio_struct.h"
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#include "driver/gpio.h"
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#include "esp_system.h"
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#ifdef ESP_IDF_VERSION_MAJOR // IDF 4+
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#if CONFIG_IDF_TARGET_ESP32 // ESP32/PICO-D4
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#include "esp32/rom/ets_sys.h"
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#include "esp32/rom/gpio.h"
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#include "esp_intr_alloc.h"
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#include "soc/rtc_io_reg.h"
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#define GPIO_FUNC 2
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#elif CONFIG_IDF_TARGET_ESP32S2
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#include "esp32s2/rom/ets_sys.h"
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#include "esp32s2/rom/gpio.h"
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#include "esp_intr_alloc.h"
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#include "soc/periph_defs.h"
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#include "soc/rtc_io_reg.h"
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#define GPIO_FUNC 1
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#else
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#define USE_ESP_IDF_GPIO 1
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#endif
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#else // ESP32 Before IDF 4.0
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#include "rom/ets_sys.h"
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#include "rom/gpio.h"
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#include "esp_intr.h"
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#endif
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#if CONFIG_IDF_TARGET_ESP32
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const int8_t esp32_adc2gpio[20] = {36, 37, 38, 39, 32, 33, 34, 35, -1, -1, 4, 0, 2, 15, 13, 12, 14, 27, 25, 26};
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#elif CONFIG_IDF_TARGET_ESP32S2
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const int8_t esp32_adc2gpio[20] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20};
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#endif
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const DRAM_ATTR esp32_gpioMux_t esp32_gpioMux[SOC_GPIO_PIN_COUNT]={
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#if CONFIG_IDF_TARGET_ESP32
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{0x44, 11, 11, 1},
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{0x88, -1, -1, -1},
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{0x40, 12, 12, 2},
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{0x84, -1, -1, -1},
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{0x48, 10, 10, 0},
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{0x6c, -1, -1, -1},
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{0x60, -1, -1, -1},
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{0x64, -1, -1, -1},
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{0x68, -1, -1, -1},
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{0x54, -1, -1, -1},
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{0x58, -1, -1, -1},
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{0x5c, -1, -1, -1},
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{0x34, 15, 15, 5},
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{0x38, 14, 14, 4},
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{0x30, 16, 16, 6},
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{0x3c, 13, 13, 3},
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{0x4c, -1, -1, -1},
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{0x50, -1, -1, -1},
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{0x70, -1, -1, -1},
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{0x74, -1, -1, -1},
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{0x78, -1, -1, -1},
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{0x7c, -1, -1, -1},
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{0x80, -1, -1, -1},
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{0x8c, -1, -1, -1},
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{0, -1, -1, -1},
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{0x24, 6, 18, -1}, //DAC1
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{0x28, 7, 19, -1}, //DAC2
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{0x2c, 17, 17, 7},
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{0, -1, -1, -1},
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{0, -1, -1, -1},
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{0, -1, -1, -1},
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{0, -1, -1, -1},
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{0x1c, 9, 4, 8},
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{0x20, 8, 5, 9},
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{0x14, 4, 6, -1},
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{0x18, 5, 7, -1},
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{0x04, 0, 0, -1},
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{0x08, 1, 1, -1},
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{0x0c, 2, 2, -1},
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{0x10, 3, 3, -1}
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#elif CONFIG_IDF_TARGET_ESP32S2
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{0x04, 0, -1, -1},
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{0x08, 1, 0, 1},
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{0x0c, 2, 1, 2},
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{0x10, 3, 2, 3},
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{0x14, 4, 3, 4},
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{0x18, 5, 4, 5},
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{0x1c, 6, 5, 6},
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{0x20, 7, 6, 7},
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{0x24, 8, 7, 8},
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{0x28, 9, 8, 9},//FSPI_HD
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{0x2c, 10, 9, 10},//FSPI_CS0 / FSPI_D4
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{0x30, 11, 10, 11},//FSPI_D / FSPI_D5
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{0x34, 12, 11, 12},//FSPI_CLK / FSPI_D6
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{0x38, 13, 12, 13},//FSPI_Q / FSPI_D7
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{0x3c, 14, 13, 14},//FSPI_WP / FSPI_DQS
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{0x40, 15, 14, -1},//32K+ / RTS0
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{0x44, 16, 15, -1},//32K- / CTS0
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{0x48, 17, 16, -1},//DAC1 / TXD1
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{0x4c, 18, 17, -1},//DAC2 / RXD1
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{0x50, 19, 18, -1},//USB D- / RTS1
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{0x54, 20, 19, -1},//USB D+ / CTS1
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{0x58, 21, -1, -1},//SDA?
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{ 0, -1, -1, -1},//UNAVAILABLE
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{ 0, -1, -1, -1},//UNAVAILABLE
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{ 0, -1, -1, -1},//UNAVAILABLE
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{ 0, -1, -1, -1},//UNAVAILABLE
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{0x6c, -1, -1, -1},//RESERVED SPI_CS1
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{0x70, -1, -1, -1},//RESERVED SPI_HD
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{0x74, -1, -1, -1},//RESERVED SPI_WP
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{0x78, -1, -1, -1},//RESERVED SPI_CS0
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{0x7c, -1, -1, -1},//RESERVED SPI_CLK
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{0x80, -1, -1, -1},//RESERVED SPI_Q
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{0x84, -1, -1, -1},//RESERVED SPI_D
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{0x88, -1, -1, -1},//FSPI_HD
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{0x8c, -1, -1, -1},//FSPI_CS0
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{0x90, -1, -1, -1},//FSPI_D
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{0x94, -1, -1, -1},//FSPI_CLK
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{0x98, -1, -1, -1},//FSPI_Q
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{0x9c, -1, -1, -1},//FSPI_WP
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{0xa0, -1, -1, -1},//MTCK
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{0xa4, -1, -1, -1},//MTDO
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{0xa8, -1, -1, -1},//MTDI
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{0xac, -1, -1, -1},//MTMS
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{0xb0, -1, -1, -1},//TXD0
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{0xb4, -1, -1, -1},//RXD0
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{0xb8, -1, -1, -1},//SCL?
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{0xbc, -1, -1, -1},//INPUT ONLY
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{0, -1, -1, -1}
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#endif
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};
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typedef void (*voidFuncPtr)(void);
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typedef void (*voidFuncPtrArg)(void*);
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typedef struct {
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voidFuncPtr fn;
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void* arg;
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bool functional;
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} InterruptHandle_t;
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static InterruptHandle_t __pinInterruptHandlers[SOC_GPIO_PIN_COUNT] = {0,};
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#include "driver/rtc_io.h"
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extern void ARDUINO_ISR_ATTR __pinMode(uint8_t pin, uint8_t mode)
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{
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#if USE_ESP_IDF_GPIO
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if (!GPIO_IS_VALID_GPIO(pin)) {
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return;
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}
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gpio_config_t conf = {
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.pin_bit_mask = (1ULL<<pin), /*!< GPIO pin: set with bit mask, each bit maps to a GPIO */
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.mode = GPIO_MODE_DISABLE, /*!< GPIO mode: set input/output mode */
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.pull_up_en = GPIO_PULLUP_DISABLE, /*!< GPIO pull-up */
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.pull_down_en = GPIO_PULLDOWN_DISABLE, /*!< GPIO pull-down */
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.intr_type = GPIO_INTR_DISABLE /*!< GPIO interrupt type */
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};
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if (mode < 0x20) {//io
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conf.mode = mode & (INPUT | OUTPUT);
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if (mode & OPEN_DRAIN) {
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conf.mode |= GPIO_MODE_DEF_OD;
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}
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if (mode & PULLUP) {
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conf.pull_up_en = GPIO_PULLUP_ENABLE;
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}
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if (mode & PULLDOWN) {
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conf.pull_down_en = GPIO_PULLDOWN_ENABLE;
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}
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}
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gpio_config(&conf);
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if(mode == SPECIAL){
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#if CONFIG_IDF_TARGET_ESP32
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PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[pin], (uint32_t)(((pin)==RX||(pin)==TX)?0:1));
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#elif CONFIG_IDF_TARGET_ESP32S2
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PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[pin], (uint32_t)(((pin)==RX||(pin)==TX)?0:2));
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#endif
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} else if(mode == ANALOG){
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#if !CONFIG_IDF_TARGET_ESP32C3
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//adc_gpio_init(ADC_UNIT_1, ADC_CHANNEL_0);
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#endif
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} else if(mode >= 0x20 && mode < ANALOG) {//function
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PIN_FUNC_SELECT(GPIO_PIN_MUX_REG[pin], mode >> 5);
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}
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#else
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if(!digitalPinIsValid(pin)) {
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return;
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}
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int8_t rtc_io = esp32_gpioMux[pin].rtc;
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uint32_t rtc_reg = (rtc_io != -1)?rtc_io_desc[rtc_io].reg:0;
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if(mode == ANALOG) {
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if(!rtc_reg) {
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return;//not rtc pin
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}
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#if CONFIG_IDF_TARGET_ESP32S2
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SENS.sar_io_mux_conf.iomux_clk_gate_en = 1;
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#endif
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SET_PERI_REG_MASK(rtc_io_desc[rtc_io].reg, (rtc_io_desc[rtc_io].mux));
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SET_PERI_REG_BITS(rtc_io_desc[rtc_io].reg, RTC_IO_TOUCH_PAD1_FUN_SEL_V, 0, rtc_io_desc[rtc_io].func);
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RTCIO.pin[rtc_io].pad_driver = 0;//OD = 1
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RTCIO.enable_w1tc.w1tc = (1U << rtc_io);
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CLEAR_PERI_REG_MASK(rtc_io_desc[rtc_io].reg, rtc_io_desc[rtc_io].ie);
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if (rtc_io_desc[rtc_io].pullup) {
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CLEAR_PERI_REG_MASK(rtc_io_desc[rtc_io].reg, rtc_io_desc[rtc_io].pullup);
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}
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if (rtc_io_desc[rtc_io].pulldown) {
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CLEAR_PERI_REG_MASK(rtc_io_desc[rtc_io].reg, rtc_io_desc[rtc_io].pulldown);
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}
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ESP_REG(DR_REG_IO_MUX_BASE + esp32_gpioMux[pin].reg) = ((uint32_t)GPIO_FUNC << MCU_SEL_S) | ((uint32_t)2 << FUN_DRV_S) | FUN_IE;
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return;
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}
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//RTC pins PULL settings
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if(rtc_reg) {
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ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_io_desc[rtc_io].mux);
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if(mode & PULLUP) {
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ESP_REG(rtc_reg) = (ESP_REG(rtc_reg) | rtc_io_desc[rtc_io].pullup) & ~(rtc_io_desc[rtc_io].pulldown);
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} else if(mode & PULLDOWN) {
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ESP_REG(rtc_reg) = (ESP_REG(rtc_reg) | rtc_io_desc[rtc_io].pulldown) & ~(rtc_io_desc[rtc_io].pullup);
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} else {
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ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_io_desc[rtc_io].pullup | rtc_io_desc[rtc_io].pulldown);
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}
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}
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uint32_t pinFunction = 0, pinControl = 0;
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if(mode & INPUT) {
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if(pin < 32) {
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GPIO.enable_w1tc = ((uint32_t)1 << pin);
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} else {
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GPIO.enable1_w1tc.val = ((uint32_t)1 << (pin - 32));
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}
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} else if(mode & OUTPUT) {
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if(pin >= NUM_OUPUT_PINS){
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return;
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} else if(pin < 32) {
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GPIO.enable_w1ts = ((uint32_t)1 << pin);
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} else {
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GPIO.enable1_w1ts.val = ((uint32_t)1 << (pin - 32));
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}
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}
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if(mode & PULLUP) {
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pinFunction |= FUN_PU;
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} else if(mode & PULLDOWN) {
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pinFunction |= FUN_PD;
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}
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pinFunction |= ((uint32_t)2 << FUN_DRV_S);//what are the drivers?
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pinFunction |= FUN_IE;//input enable but required for output as well?
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if(mode & (INPUT | OUTPUT)) {
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pinFunction |= ((uint32_t)PIN_FUNC_GPIO << MCU_SEL_S);
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} else if(mode == SPECIAL) {
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#if CONFIG_IDF_TARGET_ESP32
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pinFunction |= ((uint32_t)(((pin)==RX||(pin)==TX)?0:1) << MCU_SEL_S);
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#elif CONFIG_IDF_TARGET_ESP32S2
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pinFunction |= ((uint32_t)(((pin)==RX||(pin)==TX)?0:2) << MCU_SEL_S);
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#endif
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} else {
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pinFunction |= ((uint32_t)(mode >> 5) << MCU_SEL_S);
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}
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ESP_REG(DR_REG_IO_MUX_BASE + esp32_gpioMux[pin].reg) = pinFunction;
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if(mode & OPEN_DRAIN) {
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pinControl = (1 << GPIO_PIN0_PAD_DRIVER_S);
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}
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GPIO.pin[pin].val = pinControl;
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#endif
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}
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extern void ARDUINO_ISR_ATTR __digitalWrite(uint8_t pin, uint8_t val)
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{
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#if USE_ESP_IDF_GPIO
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gpio_set_level((gpio_num_t)pin, val);
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#elif CONFIG_IDF_TARGET_ESP32C3
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if (val) {
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GPIO.out_w1ts.out_w1ts = (1 << pin);
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} else {
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GPIO.out_w1tc.out_w1tc = (1 << pin);
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}
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#else
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if(val) {
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if(pin < 32) {
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GPIO.out_w1ts = ((uint32_t)1 << pin);
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} else if(pin < NUM_OUPUT_PINS) {
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GPIO.out1_w1ts.val = ((uint32_t)1 << (pin - 32));
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}
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} else {
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if(pin < 32) {
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GPIO.out_w1tc = ((uint32_t)1 << pin);
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} else if(pin < NUM_OUPUT_PINS) {
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GPIO.out1_w1tc.val = ((uint32_t)1 << (pin - 32));
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}
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}
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#endif
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}
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extern int ARDUINO_ISR_ATTR __digitalRead(uint8_t pin)
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{
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#if USE_ESP_IDF_GPIO
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return gpio_get_level((gpio_num_t)pin);
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#elif CONFIG_IDF_TARGET_ESP32C3
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return (GPIO.in.data >> pin) & 0x1;
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#else
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if(pin < 32) {
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return (GPIO.in >> pin) & 0x1;
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} else if(pin < GPIO_PIN_COUNT) {
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return (GPIO.in1.val >> (pin - 32)) & 0x1;
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}
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return 0;
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#endif
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}
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#if USE_ESP_IDF_GPIO
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static void ARDUINO_ISR_ATTR __onPinInterrupt(void * arg) {
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InterruptHandle_t * isr = (InterruptHandle_t*)arg;
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if(isr->fn) {
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if(isr->arg){
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((voidFuncPtrArg)isr->fn)(isr->arg);
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} else {
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isr->fn();
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}
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}
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}
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#else
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static intr_handle_t gpio_intr_handle = NULL;
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static void ARDUINO_ISR_ATTR __onPinInterrupt()
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{
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uint32_t gpio_intr_status_l=0;
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uint32_t gpio_intr_status_h=0;
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gpio_intr_status_l = GPIO.status;
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gpio_intr_status_h = GPIO.status1.val;
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GPIO.status_w1tc = gpio_intr_status_l;//Clear intr for gpio0-gpio31
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GPIO.status1_w1tc.val = gpio_intr_status_h;//Clear intr for gpio32-39
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uint8_t pin=0;
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if(gpio_intr_status_l) {
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do {
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if(gpio_intr_status_l & ((uint32_t)1 << pin)) {
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if(__pinInterruptHandlers[pin].fn) {
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if(__pinInterruptHandlers[pin].arg){
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((voidFuncPtrArg)__pinInterruptHandlers[pin].fn)(__pinInterruptHandlers[pin].arg);
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} else {
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__pinInterruptHandlers[pin].fn();
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}
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}
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}
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} while(++pin<32);
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}
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if(gpio_intr_status_h) {
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pin=32;
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do {
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if(gpio_intr_status_h & ((uint32_t)1 << (pin - 32))) {
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if(__pinInterruptHandlers[pin].fn) {
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if(__pinInterruptHandlers[pin].arg){
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((voidFuncPtrArg)__pinInterruptHandlers[pin].fn)(__pinInterruptHandlers[pin].arg);
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} else {
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__pinInterruptHandlers[pin].fn();
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}
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}
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}
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} while(++pin<GPIO_PIN_COUNT);
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}
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}
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#endif
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extern void cleanupFunctional(void* arg);
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extern void __attachInterruptFunctionalArg(uint8_t pin, voidFuncPtrArg userFunc, void * arg, int intr_type, bool functional)
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{
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static bool interrupt_initialized = false;
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if(!interrupt_initialized) {
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#if USE_ESP_IDF_GPIO
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esp_err_t err = gpio_install_isr_service((int)ARDUINO_ISR_FLAG);
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interrupt_initialized = (err == ESP_OK) || (err == ESP_ERR_INVALID_STATE);
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#else
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interrupt_initialized = true;
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esp_intr_alloc(ETS_GPIO_INTR_SOURCE, (int)ARDUINO_ISR_FLAG, __onPinInterrupt, NULL, &gpio_intr_handle);
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#endif
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}
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if(!interrupt_initialized) {
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log_e("GPIO ISR Service Failed To Start");
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return;
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}
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// if new attach without detach remove old info
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if (__pinInterruptHandlers[pin].functional && __pinInterruptHandlers[pin].arg)
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{
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cleanupFunctional(__pinInterruptHandlers[pin].arg);
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}
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__pinInterruptHandlers[pin].fn = (voidFuncPtr)userFunc;
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__pinInterruptHandlers[pin].arg = arg;
|
|
__pinInterruptHandlers[pin].functional = functional;
|
|
|
|
#if USE_ESP_IDF_GPIO
|
|
gpio_set_intr_type((gpio_num_t)pin, (gpio_int_type_t)(intr_type & 0x7));
|
|
if(intr_type & 0x8){
|
|
gpio_wakeup_enable((gpio_num_t)pin, (gpio_int_type_t)(intr_type & 0x7));
|
|
}
|
|
gpio_isr_handler_add((gpio_num_t)pin, __onPinInterrupt, &__pinInterruptHandlers[pin]);
|
|
gpio_intr_enable((gpio_num_t)pin);
|
|
#else
|
|
esp_intr_disable(gpio_intr_handle);
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
if(esp_intr_get_cpu(gpio_intr_handle)) { //APP_CPU
|
|
#endif
|
|
GPIO.pin[pin].int_ena = 1;
|
|
#if CONFIG_IDF_TARGET_ESP32
|
|
} else { //PRO_CPU
|
|
GPIO.pin[pin].int_ena = 4;
|
|
}
|
|
#endif
|
|
GPIO.pin[pin].int_type = intr_type;
|
|
esp_intr_enable(gpio_intr_handle);
|
|
#endif
|
|
}
|
|
|
|
extern void __attachInterruptArg(uint8_t pin, voidFuncPtrArg userFunc, void * arg, int intr_type)
|
|
{
|
|
__attachInterruptFunctionalArg(pin, userFunc, arg, intr_type, false);
|
|
}
|
|
|
|
extern void __attachInterrupt(uint8_t pin, voidFuncPtr userFunc, int intr_type) {
|
|
__attachInterruptFunctionalArg(pin, (voidFuncPtrArg)userFunc, NULL, intr_type, false);
|
|
}
|
|
|
|
extern void __detachInterrupt(uint8_t pin)
|
|
{
|
|
#if USE_ESP_IDF_GPIO
|
|
gpio_intr_disable((gpio_num_t)pin);
|
|
gpio_isr_handler_remove((gpio_num_t)pin);
|
|
gpio_wakeup_disable((gpio_num_t)pin);
|
|
#else
|
|
esp_intr_disable(gpio_intr_handle);
|
|
#endif
|
|
if (__pinInterruptHandlers[pin].functional && __pinInterruptHandlers[pin].arg)
|
|
{
|
|
cleanupFunctional(__pinInterruptHandlers[pin].arg);
|
|
}
|
|
__pinInterruptHandlers[pin].fn = NULL;
|
|
__pinInterruptHandlers[pin].arg = NULL;
|
|
__pinInterruptHandlers[pin].functional = false;
|
|
|
|
#if USE_ESP_IDF_GPIO
|
|
gpio_set_intr_type((gpio_num_t)pin, GPIO_INTR_DISABLE);
|
|
#else
|
|
GPIO.pin[pin].int_ena = 0;
|
|
GPIO.pin[pin].int_type = 0;
|
|
esp_intr_enable(gpio_intr_handle);
|
|
#endif
|
|
}
|
|
|
|
|
|
extern void pinMode(uint8_t pin, uint8_t mode) __attribute__ ((weak, alias("__pinMode")));
|
|
extern void digitalWrite(uint8_t pin, uint8_t val) __attribute__ ((weak, alias("__digitalWrite")));
|
|
extern int digitalRead(uint8_t pin) __attribute__ ((weak, alias("__digitalRead")));
|
|
extern void attachInterrupt(uint8_t pin, voidFuncPtr handler, int mode) __attribute__ ((weak, alias("__attachInterrupt")));
|
|
extern void attachInterruptArg(uint8_t pin, voidFuncPtrArg handler, void * arg, int mode) __attribute__ ((weak, alias("__attachInterruptArg")));
|
|
extern void detachInterrupt(uint8_t pin) __attribute__ ((weak, alias("__detachInterrupt")));
|
|
|