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| /** | ||
| * Marlin 3D Printer Firmware | ||
| * Copyright (c) 2024 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 <https://www.gnu.org/licenses/>. | ||
| * | ||
| */ | ||
| #include "../platforms.h" | ||
|
|
||
| #ifdef __PLAT_RP2040__ | ||
|
|
||
| #include "HAL.h" | ||
| //#include "usb_serial.h" | ||
|
|
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| #include "../../inc/MarlinConfig.h" | ||
| #include "../shared/Delay.h" | ||
|
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||
| extern "C" { | ||
| #include "pico/bootrom.h" | ||
| #include "hardware/watchdog.h" | ||
| } | ||
|
|
||
| #if HAS_SD_HOST_DRIVE | ||
| #include "msc_sd.h" | ||
| #include "usbd_cdc_if.h" | ||
| #endif | ||
|
|
||
| // ------------------------ | ||
| // Public Variables | ||
| // ------------------------ | ||
|
|
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| volatile uint16_t adc_result; | ||
|
|
||
| // ------------------------ | ||
| // Public functions | ||
| // ------------------------ | ||
|
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||
| TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial()); | ||
|
|
||
| // HAL initialization task | ||
| void MarlinHAL::init() { | ||
| // Ensure F_CPU is a constant expression. | ||
| // If the compiler breaks here, it means that delay code that should compute at compile time will not work. | ||
| // So better safe than sorry here. | ||
| constexpr int cpuFreq = F_CPU; | ||
| UNUSED(cpuFreq); | ||
|
|
||
| #undef SDSS | ||
| #define SDSS 2 | ||
| #define PIN_EXISTS_(P1,P2) (defined(P1##P2) && P1##P2 >= 0) | ||
| #if HAS_MEDIA && DISABLED(SDIO_SUPPORT) && PIN_EXISTS_(SDSS,) | ||
| OUT_WRITE(SDSS, HIGH); // Try to set SDSS inactive before any other SPI users start up | ||
| #endif | ||
|
|
||
| #if PIN_EXISTS(LED) | ||
| OUT_WRITE(LED_PIN, LOW); | ||
| #endif | ||
|
|
||
| #if ENABLED(SRAM_EEPROM_EMULATION) | ||
| // __HAL_RCC_PWR_CLK_ENABLE(); | ||
| // HAL_PWR_EnableBkUpAccess(); // Enable access to backup SRAM | ||
| // __HAL_RCC_BKPSRAM_CLK_ENABLE(); | ||
| // LL_PWR_EnableBkUpRegulator(); // Enable backup regulator | ||
| // while (!LL_PWR_IsActiveFlag_BRR()); // Wait until backup regulator is initialized | ||
| #endif | ||
|
|
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| HAL_timer_init(); | ||
|
|
||
| #if ENABLED(EMERGENCY_PARSER) && USBD_USE_CDC | ||
| USB_Hook_init(); | ||
| #endif | ||
|
|
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| TERN_(POSTMORTEM_DEBUGGING, install_min_serial()); // Install the min serial handler | ||
|
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||
| TERN_(HAS_SD_HOST_DRIVE, MSC_SD_init()); // Enable USB SD card access | ||
|
|
||
| #if PIN_EXISTS(USB_CONNECT) | ||
| OUT_WRITE(USB_CONNECT_PIN, !USB_CONNECT_INVERTING); // USB clear connection | ||
| delay_ms(1000); // Give OS time to notice | ||
| WRITE(USB_CONNECT_PIN, USB_CONNECT_INVERTING); | ||
| #endif | ||
| } | ||
|
|
||
| uint8_t MarlinHAL::get_reset_source() { | ||
| return watchdog_enable_caused_reboot() ? RST_WATCHDOG : 0; | ||
| } | ||
|
|
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| void MarlinHAL::reboot() { watchdog_reboot(0, 0, 1); } | ||
|
|
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| // ------------------------ | ||
| // Watchdog Timer | ||
| // ------------------------ | ||
|
|
||
| #if ENABLED(USE_WATCHDOG) | ||
|
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| #define WDT_TIMEOUT_US TERN(WATCHDOG_DURATION_8S, 8000000, 4000000) // 4 or 8 second timeout | ||
|
|
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| extern "C" { | ||
| #include "hardware/watchdog.h" | ||
| } | ||
|
|
||
| void MarlinHAL::watchdog_init() { | ||
| #if DISABLED(DISABLE_WATCHDOG_INIT) | ||
| static_assert(WDT_TIMEOUT_US > 1000, "WDT Timout is too small, aborting"); | ||
| watchdog_enable(WDT_TIMEOUT_US/1000, true); | ||
| #endif | ||
| } | ||
|
|
||
| void MarlinHAL::watchdog_refresh() { | ||
| watchdog_update(); | ||
| #if DISABLED(PINS_DEBUGGING) && PIN_EXISTS(LED) | ||
| TOGGLE(LED_PIN); // heartbeat indicator | ||
| #endif | ||
| } | ||
|
|
||
| #endif | ||
|
|
||
| // ------------------------ | ||
| // ADC | ||
| // ------------------------ | ||
|
|
||
| volatile bool MarlinHAL::adc_has_result = false; | ||
|
|
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| void MarlinHAL::adc_init() { | ||
| analogReadResolution(HAL_ADC_RESOLUTION); | ||
| ::adc_init(); | ||
| adc_fifo_setup(true, false, 1, false, false); | ||
| irq_set_exclusive_handler(ADC_IRQ_FIFO, adc_exclusive_handler); | ||
| irq_set_enabled(ADC_IRQ_FIFO, true); | ||
| adc_irq_set_enabled(true); | ||
| } | ||
|
|
||
| void MarlinHAL::adc_enable(const pin_t pin) { | ||
| if (pin >= A0 && pin <= A3) | ||
| adc_gpio_init(pin); | ||
| else if (pin == HAL_ADC_MCU_TEMP_DUMMY_PIN) | ||
| adc_set_temp_sensor_enabled(true); | ||
| } | ||
|
|
||
| void MarlinHAL::adc_start(const pin_t pin) { | ||
| adc_has_result = false; | ||
| // Select an ADC input. 0...3 are GPIOs 26...29 respectively. | ||
| adc_select_input(pin == HAL_ADC_MCU_TEMP_DUMMY_PIN ? 4 : pin - A0); | ||
| adc_run(true); | ||
| } | ||
|
|
||
| void MarlinHAL::adc_exclusive_handler() { | ||
| adc_run(false); // Disable since we only want one result | ||
| irq_clear(ADC_IRQ_FIFO); // Clear the IRQ | ||
|
|
||
| if (adc_fifo_get_level() >= 1) { | ||
| adc_result = adc_fifo_get(); // Pop the result | ||
| adc_fifo_drain(); | ||
| adc_has_result = true; // Signal the end of the conversion | ||
| } | ||
| } | ||
|
|
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| uint16_t MarlinHAL::adc_value() { return adc_result; } | ||
|
|
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| // Reset the system to initiate a firmware flash | ||
| void flashFirmware(const int16_t) { hal.reboot(); } | ||
|
|
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| extern "C" { | ||
| void * _sbrk(int incr); | ||
| extern unsigned int __bss_end__; // end of bss section | ||
| } | ||
|
|
||
| // Return free memory between end of heap (or end bss) and whatever is current | ||
| int freeMemory() { | ||
| int free_memory, heap_end = (int)_sbrk(0); | ||
| return (int)&free_memory - (heap_end ?: (int)&__bss_end__); | ||
| } | ||
|
|
||
| #endif // __PLAT_RP2040__ |
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