From e8701195e66f2d27ffe17fb514eae8173795aaf7 Mon Sep 17 00:00:00 2001 From: Georgiy Bondarenko <69736697+nehilo@users.noreply.github.com> Date: Thu, 4 Mar 2021 22:54:23 +0500 Subject: Initial commit --- Marlin/src/HAL/ESP32/HAL.cpp | 278 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 Marlin/src/HAL/ESP32/HAL.cpp (limited to 'Marlin/src/HAL/ESP32/HAL.cpp') diff --git a/Marlin/src/HAL/ESP32/HAL.cpp b/Marlin/src/HAL/ESP32/HAL.cpp new file mode 100644 index 0000000..6ff1446 --- /dev/null +++ b/Marlin/src/HAL/ESP32/HAL.cpp @@ -0,0 +1,278 @@ +/** + * Marlin 3D Printer Firmware + * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * + * Based on Sprinter and grbl. + * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + */ +#ifdef ARDUINO_ARCH_ESP32 + +#include "../../inc/MarlinConfig.h" + +#include +#include +#include +#include + +#if ENABLED(WIFISUPPORT) + #include + #include "wifi.h" + #if ENABLED(OTASUPPORT) + #include "ota.h" + #endif + #if ENABLED(WEBSUPPORT) + #include "spiffs.h" + #include "web.h" + #endif +#endif + +#if ENABLED(ESP3D_WIFISUPPORT) + DefaultSerial MSerial(false, Serial2Socket); +#endif + +// ------------------------ +// Externs +// ------------------------ + +portMUX_TYPE spinlock = portMUX_INITIALIZER_UNLOCKED; + +// ------------------------ +// Local defines +// ------------------------ + +#define V_REF 1100 + +// ------------------------ +// Public Variables +// ------------------------ + +uint16_t HAL_adc_result; + +// ------------------------ +// Private Variables +// ------------------------ + +esp_adc_cal_characteristics_t characteristics[ADC_ATTEN_MAX]; +adc_atten_t attenuations[ADC1_CHANNEL_MAX] = {}; +uint32_t thresholds[ADC_ATTEN_MAX]; +volatile int numPWMUsed = 0, + pwmPins[MAX_PWM_PINS], + pwmValues[MAX_PWM_PINS]; + +// ------------------------ +// Public functions +// ------------------------ + +#if ENABLED(WIFI_CUSTOM_COMMAND) + + bool wifi_custom_command(char * const command_ptr) { + #if ENABLED(ESP3D_WIFISUPPORT) + return esp3dlib.parse(command_ptr); + #else + UNUSED(command_ptr); + return false; + #endif + } + +#endif + +void HAL_init() { TERN_(I2S_STEPPER_STREAM, i2s_init()); } + +void HAL_init_board() { + + #if ENABLED(ESP3D_WIFISUPPORT) + esp3dlib.init(); + #elif ENABLED(WIFISUPPORT) + wifi_init(); + TERN_(OTASUPPORT, OTA_init()); + #if ENABLED(WEBSUPPORT) + spiffs_init(); + web_init(); + #endif + server.begin(); + #endif + + // ESP32 uses a GPIO matrix that allows pins to be assigned to hardware serial ports. + // The following code initializes hardware Serial1 and Serial2 to use user-defined pins + // if they have been defined. + #if defined(HARDWARE_SERIAL1_RX) && defined(HARDWARE_SERIAL1_TX) + HardwareSerial Serial1(1); + #ifdef TMC_BAUD_RATE // use TMC_BAUD_RATE for Serial1 if defined + Serial1.begin(TMC_BAUD_RATE, SERIAL_8N1, HARDWARE_SERIAL1_RX, HARDWARE_SERIAL1_TX); + #else // use default BAUDRATE if TMC_BAUD_RATE not defined + Serial1.begin(BAUDRATE, SERIAL_8N1, HARDWARE_SERIAL1_RX, HARDWARE_SERIAL1_TX); + #endif + #endif + #if defined(HARDWARE_SERIAL2_RX) && defined(HARDWARE_SERIAL2_TX) + HardwareSerial Serial2(2); + #ifdef TMC_BAUD_RATE // use TMC_BAUD_RATE for Serial1 if defined + Serial2.begin(TMC_BAUD_RATE, SERIAL_8N1, HARDWARE_SERIAL2_RX, HARDWARE_SERIAL2_TX); + #else // use default BAUDRATE if TMC_BAUD_RATE not defined + Serial2.begin(BAUDRATE, SERIAL_8N1, HARDWARE_SERIAL2_RX, HARDWARE_SERIAL2_TX); + #endif + #endif + +} + +void HAL_idletask() { + #if BOTH(WIFISUPPORT, OTASUPPORT) + OTA_handle(); + #endif + TERN_(ESP3D_WIFISUPPORT, esp3dlib.idletask()); +} + +void HAL_clear_reset_source() { } + +uint8_t HAL_get_reset_source() { return rtc_get_reset_reason(1); } + +void _delay_ms(int delay_ms) { delay(delay_ms); } + +// return free memory between end of heap (or end bss) and whatever is current +int freeMemory() { return ESP.getFreeHeap(); } + +// ------------------------ +// ADC +// ------------------------ +#define ADC1_CHANNEL(pin) ADC1_GPIO ## pin ## _CHANNEL + +adc1_channel_t get_channel(int pin) { + switch (pin) { + case 39: return ADC1_CHANNEL(39); + case 36: return ADC1_CHANNEL(36); + case 35: return ADC1_CHANNEL(35); + case 34: return ADC1_CHANNEL(34); + case 33: return ADC1_CHANNEL(33); + case 32: return ADC1_CHANNEL(32); + } + return ADC1_CHANNEL_MAX; +} + +void adc1_set_attenuation(adc1_channel_t chan, adc_atten_t atten) { + if (attenuations[chan] != atten) { + adc1_config_channel_atten(chan, atten); + attenuations[chan] = atten; + } +} + +void HAL_adc_init() { + // Configure ADC + adc1_config_width(ADC_WIDTH_12Bit); + + // Configure channels only if used as (re-)configuring a pin for ADC that is used elsewhere might have adverse effects + TERN_(HAS_TEMP_ADC_0, adc1_set_attenuation(get_channel(TEMP_0_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_ADC_1, adc1_set_attenuation(get_channel(TEMP_1_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_ADC_2, adc1_set_attenuation(get_channel(TEMP_2_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_ADC_3, adc1_set_attenuation(get_channel(TEMP_3_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_ADC_4, adc1_set_attenuation(get_channel(TEMP_4_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_ADC_5, adc1_set_attenuation(get_channel(TEMP_5_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_ADC_6, adc2_set_attenuation(get_channel(TEMP_6_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_ADC_7, adc3_set_attenuation(get_channel(TEMP_7_PIN), ADC_ATTEN_11db)); + TERN_(HAS_HEATED_BED, adc1_set_attenuation(get_channel(TEMP_BED_PIN), ADC_ATTEN_11db)); + TERN_(HAS_TEMP_CHAMBER, adc1_set_attenuation(get_channel(TEMP_CHAMBER_PIN), ADC_ATTEN_11db)); + TERN_(FILAMENT_WIDTH_SENSOR, adc1_set_attenuation(get_channel(FILWIDTH_PIN), ADC_ATTEN_11db)); + + // Note that adc2 is shared with the WiFi module, which has higher priority, so the conversion may fail. + // That's why we're not setting it up here. + + // Calculate ADC characteristics (i.e., gain and offset factors for each attenuation level) + for (int i = 0; i < ADC_ATTEN_MAX; i++) { + esp_adc_cal_characterize(ADC_UNIT_1, (adc_atten_t)i, ADC_WIDTH_BIT_12, V_REF, &characteristics[i]); + + // Change attenuation 100mV below the calibrated threshold + thresholds[i] = esp_adc_cal_raw_to_voltage(4095, &characteristics[i]); + } +} + +void HAL_adc_start_conversion(const uint8_t adc_pin) { + const adc1_channel_t chan = get_channel(adc_pin); + uint32_t mv; + esp_adc_cal_get_voltage((adc_channel_t)chan, &characteristics[attenuations[chan]], &mv); + HAL_adc_result = mv * 1023.0 / 3300.0; + + // Change the attenuation level based on the new reading + adc_atten_t atten; + if (mv < thresholds[ADC_ATTEN_DB_0] - 100) + atten = ADC_ATTEN_DB_0; + else if (mv > thresholds[ADC_ATTEN_DB_0] - 50 && mv < thresholds[ADC_ATTEN_DB_2_5] - 100) + atten = ADC_ATTEN_DB_2_5; + else if (mv > thresholds[ADC_ATTEN_DB_2_5] - 50 && mv < thresholds[ADC_ATTEN_DB_6] - 100) + atten = ADC_ATTEN_DB_6; + else if (mv > thresholds[ADC_ATTEN_DB_6] - 50) + atten = ADC_ATTEN_DB_11; + else return; + + adc1_set_attenuation(chan, atten); +} + +void analogWrite(pin_t pin, int value) { + // Use ledc hardware for internal pins + if (pin < 34) { + static int cnt_channel = 1, pin_to_channel[40] = { 0 }; + if (pin_to_channel[pin] == 0) { + ledcAttachPin(pin, cnt_channel); + ledcSetup(cnt_channel, 490, 8); + ledcWrite(cnt_channel, value); + pin_to_channel[pin] = cnt_channel++; + } + ledcWrite(pin_to_channel[pin], value); + return; + } + + int idx = -1; + + // Search Pin + for (int i = 0; i < numPWMUsed; ++i) + if (pwmPins[i] == pin) { idx = i; break; } + + // not found ? + if (idx < 0) { + // No slots remaining + if (numPWMUsed >= MAX_PWM_PINS) return; + + // Take new slot for pin + idx = numPWMUsed; + pwmPins[idx] = pin; + // Start timer on first use + if (idx == 0) HAL_timer_start(PWM_TIMER_NUM, PWM_TIMER_FREQUENCY); + + ++numPWMUsed; + } + + // Use 7bit internal value - add 1 to have 100% high at 255 + pwmValues[idx] = (value + 1) / 2; +} + +// Handle PWM timer interrupt +HAL_PWM_TIMER_ISR() { + HAL_timer_isr_prologue(PWM_TIMER_NUM); + + static uint8_t count = 0; + + for (int i = 0; i < numPWMUsed; ++i) { + if (count == 0) // Start of interval + WRITE(pwmPins[i], pwmValues[i] ? HIGH : LOW); + else if (pwmValues[i] == count) // End of duration + WRITE(pwmPins[i], LOW); + } + + // 128 for 7 Bit resolution + count = (count + 1) & 0x7F; + + HAL_timer_isr_epilogue(PWM_TIMER_NUM); +} + +#endif // ARDUINO_ARCH_ESP32 -- cgit v1.2.3