From 0c4b277fffcb3d74b31fb0c996d2a6f560ede296 Mon Sep 17 00:00:00 2001 From: rondlh <77279634+rondlh@users.noreply.github.com> Date: Tue, 12 Dec 2023 08:48:02 +0800 Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20SERIAL=5FDMA=20(for=20some=20STM32F?= =?UTF-8?q?x)=20(#26328)?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- Marlin/Configuration_adv.h | 24 +- Marlin/src/HAL/AVR/MarlinSerial.h | 4 - Marlin/src/HAL/AVR/inc/Conditionals_LCD.h | 4 + Marlin/src/HAL/LPC1768/MarlinSerial.h | 10 - Marlin/src/HAL/LPC1768/inc/Conditionals_LCD.h | 4 + Marlin/src/HAL/LPC1768/inc/Conditionals_adv.h | 7 + Marlin/src/HAL/STM32/HardwareSerial.cpp | 449 ++++++++++++++++++ Marlin/src/HAL/STM32/HardwareSerial.h | 85 ++++ Marlin/src/HAL/STM32/MarlinSerial.cpp | 60 ++- Marlin/src/HAL/STM32/MarlinSerial.h | 37 +- Marlin/src/inc/SanityCheck.h | 9 + buildroot/tests/STM32F103RE_btt | 1 + 12 files changed, 637 insertions(+), 57 deletions(-) create mode 100644 Marlin/src/HAL/STM32/HardwareSerial.cpp create mode 100644 Marlin/src/HAL/STM32/HardwareSerial.h diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h index 5871c99a215fb..e4f85a8d87b73 100644 --- a/Marlin/Configuration_adv.h +++ b/Marlin/Configuration_adv.h @@ -2649,10 +2649,12 @@ //#define FULL_REPORT_TO_HOST_FEATURE // Auto-report the machine status like Grbl CNC #endif -// Bad Serial-connections can miss a received command by sending an 'ok' -// Therefore some clients abort after 30 seconds in a timeout. -// Some other clients start sending commands while receiving a 'wait'. -// This "wait" is only sent when the buffer is empty. 1 second is a good value here. +/** + * Bad Serial-connections can miss a received command by sending an 'ok' + * Therefore some clients abort after 30 seconds in a timeout. + * Some other clients start sending commands while receiving a 'wait'. + * This "wait" is only sent when the buffer is empty. 1 second is a good value here. + */ //#define NO_TIMEOUTS 1000 // (ms) // Some clients will have this feature soon. This could make the NO_TIMEOUTS unnecessary. @@ -2665,6 +2667,15 @@ // For serial echo, the number of digits after the decimal point //#define SERIAL_FLOAT_PRECISION 4 +/** + * This feature is EXPERIMENTAL so use with caution and test thoroughly. + * Enable this option to receive data on the serial ports via the onboard DMA + * controller for more stable and reliable high-speed serial communication. + * Only some STM32 MCUs are currently supported. + * Note: This has no effect on emulated USB serial ports. + */ +//#define SERIAL_DMA + /** * Set the number of proportional font spaces required to fill up a typical character space. * This can help to better align the output of commands like `G29 O` Mesh Output. @@ -3442,9 +3453,8 @@ /** * TWI/I2C BUS * - * This feature is an EXPERIMENTAL feature so it shall not be used on production - * machines. Enabling this will allow you to send and receive I2C data from slave - * devices on the bus. + * This feature is EXPERIMENTAL but may be useful for custom I2C peripherals. + * Enable this to send and receive I2C data from slave devices on the bus. * * ; Example #1 * ; This macro send the string "Marlin" to the slave device with address 0x63 (99) diff --git a/Marlin/src/HAL/AVR/MarlinSerial.h b/Marlin/src/HAL/AVR/MarlinSerial.h index f47541f12dc54..a40730e0a87f7 100644 --- a/Marlin/src/HAL/AVR/MarlinSerial.h +++ b/Marlin/src/HAL/AVR/MarlinSerial.h @@ -37,10 +37,6 @@ #include "../../core/types.h" #include "../../core/serial_hook.h" -#ifndef SERIAL_PORT - #define SERIAL_PORT 0 -#endif - #ifndef USBCON // The presence of the UBRRH register is used to detect a UART. diff --git a/Marlin/src/HAL/AVR/inc/Conditionals_LCD.h b/Marlin/src/HAL/AVR/inc/Conditionals_LCD.h index 5f1c4b16019d2..65b019b261a8f 100644 --- a/Marlin/src/HAL/AVR/inc/Conditionals_LCD.h +++ b/Marlin/src/HAL/AVR/inc/Conditionals_LCD.h @@ -20,3 +20,7 @@ * */ #pragma once + +#ifndef SERIAL_PORT + #define SERIAL_PORT 0 +#endif diff --git a/Marlin/src/HAL/LPC1768/MarlinSerial.h b/Marlin/src/HAL/LPC1768/MarlinSerial.h index 3e6848a1e3d03..2fadd8209bdff 100644 --- a/Marlin/src/HAL/LPC1768/MarlinSerial.h +++ b/Marlin/src/HAL/LPC1768/MarlinSerial.h @@ -30,16 +30,6 @@ #endif #include "../../core/serial_hook.h" -#ifndef SERIAL_PORT - #define SERIAL_PORT 0 -#endif -#ifndef RX_BUFFER_SIZE - #define RX_BUFFER_SIZE 128 -#endif -#ifndef TX_BUFFER_SIZE - #define TX_BUFFER_SIZE 32 -#endif - class MarlinSerial : public HardwareSerial { public: MarlinSerial(LPC_UART_TypeDef *UARTx) : HardwareSerial(UARTx) { } diff --git a/Marlin/src/HAL/LPC1768/inc/Conditionals_LCD.h b/Marlin/src/HAL/LPC1768/inc/Conditionals_LCD.h index 5f1c4b16019d2..65b019b261a8f 100644 --- a/Marlin/src/HAL/LPC1768/inc/Conditionals_LCD.h +++ b/Marlin/src/HAL/LPC1768/inc/Conditionals_LCD.h @@ -20,3 +20,7 @@ * */ #pragma once + +#ifndef SERIAL_PORT + #define SERIAL_PORT 0 +#endif diff --git a/Marlin/src/HAL/LPC1768/inc/Conditionals_adv.h b/Marlin/src/HAL/LPC1768/inc/Conditionals_adv.h index 8e7cab185f2a8..9d04c4f787c6f 100644 --- a/Marlin/src/HAL/LPC1768/inc/Conditionals_adv.h +++ b/Marlin/src/HAL/LPC1768/inc/Conditionals_adv.h @@ -24,3 +24,10 @@ #if DISABLED(NO_SD_HOST_DRIVE) #define HAS_SD_HOST_DRIVE 1 #endif + +#ifndef RX_BUFFER_SIZE + #define RX_BUFFER_SIZE 128 +#endif +#ifndef TX_BUFFER_SIZE + #define TX_BUFFER_SIZE 32 +#endif diff --git a/Marlin/src/HAL/STM32/HardwareSerial.cpp b/Marlin/src/HAL/STM32/HardwareSerial.cpp new file mode 100644 index 0000000000000..a6f97f356e2ed --- /dev/null +++ b/Marlin/src/HAL/STM32/HardwareSerial.cpp @@ -0,0 +1,449 @@ +/** + * Marlin 3D Printer Firmware + * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * + * Based on Sprinter and grbl. + * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm + * Copyright (c) 2017 Victor Perez + * + * 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 . + * + */ + +// +// HAL_HardwareSerial Class. Adapted from Arduino HardwareSerial. +// + +#include "../platforms.h" + +#ifdef HAL_STM32 + +#include "../../inc/MarlinConfig.h" + +#if ENABLED(SERIAL_DMA) && defined(HAL_UART_MODULE_ENABLED) && !defined(HAL_UART_MODULE_ONLY) + +#include +#include "HardwareSerial.h" +#include "uart.h" + +// USART/UART PIN MAPPING FOR STM32F0/F1/F2/F4/F7 +#ifndef PIN_SERIAL1_TX + #define PIN_SERIAL1_TX PA9 +#endif +#ifndef PIN_SERIAL1_RX + #define PIN_SERIAL1_RX PA10 +#endif +#ifndef PIN_SERIAL2_TX + #define PIN_SERIAL2_TX PA2 +#endif +#ifndef PIN_SERIAL2_RX + #define PIN_SERIAL2_RX PA3 +#endif +#ifndef PIN_SERIAL3_TX + #define PIN_SERIAL3_TX PB10 +#endif +#ifndef PIN_SERIAL3_RX + #define PIN_SERIAL3_RX PB11 +#endif +#ifndef PIN_SERIAL4_TX + #define PIN_SERIAL4_TX PC10 +#endif +#ifndef PIN_SERIAL4_RX + #define PIN_SERIAL4_RX PC11 +#endif +#ifndef PIN_SERIAL5_TX + #define PIN_SERIAL5_TX PC12 +#endif +#ifndef PIN_SERIAL5_RX + #define PIN_SERIAL5_RX PD2 +#endif +#ifndef PIN_SERIAL6_TX + #define PIN_SERIAL6_TX PC6 +#endif +#ifndef PIN_SERIAL6_RX + #define PIN_SERIAL6_RX PC7 +#endif + +// TODO: Get from include file + +#if ANY(STM32F2xx, STM32F4xx, STM32F7xx) + + #define RCC_AHB1Periph_DMA1 ((uint32_t)0x00200000) + #define RCC_AHB1Periph_DMA2 ((uint32_t)0x00400000) + + void RCC_AHB1PeriphClockCmd(uint32_t RCC_AHB1Periph, FunctionalState NewState) { + // Check the parameters + assert_param(IS_RCC_AHB1_CLOCK_PERIPH(RCC_AHB1Periph)); + + assert_param(IS_FUNCTIONAL_STATE(NewState)); + if (NewState != DISABLE) + RCC->AHB1ENR |= RCC_AHB1Periph; + else + RCC->AHB1ENR &= ~RCC_AHB1Periph; + } + +#endif + +#if ANY(STM32F0xx, STM32F1xx) + + #define RCC_AHBPeriph_DMA1 ((uint32_t)0x00000001) + #define RCC_AHBPeriph_DMA2 ((uint32_t)0x00000002) + + void RCC_AHBPeriphClockCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState) { + /* Check the parameters */ + assert_param(IS_RCC_AHB_PERIPH(RCC_AHBPeriph)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + RCC->AHBENR |= RCC_AHBPeriph; + else + RCC->AHBENR &= ~RCC_AHBPeriph; + } + +#endif + +// END OF TODO------------------------------------------------------ + +// SerialEvent functions are weak, so when the user doesn't define them, +// the linker just sets their address to 0 (which is checked below). +#ifdef USING_HW_SERIAL1 + HAL_HardwareSerial HSerial1(USART1); + void serialEvent1() __attribute__((weak)); +#endif +#ifdef USING_HW_SERIAL2 + HAL_HardwareSerial HSerial2(USART2); + void serialEvent2() __attribute__((weak)); +#endif +#ifdef USING_HW_SERIAL3 + HAL_HardwareSerial Serial3(USART3); + void serialEvent3() __attribute__((weak)); +#endif +#ifdef USING_HW_SERIAL4 + #ifdef USART4 + HAL_HardwareSerial HSerial4(USART4); + #else + HAL_HardwareSerial HSerial4(UART4); + #endif + void serialEvent4() __attribute__((weak)); +#endif +#ifdef USING_HW_SERIAL5 + #ifdef USART5 + HAL_HardwareSerial HSerial5(USART5); + #else + HAL_HardwareSerial HSerial5(UART5); + #endif + void serialEvent5() __attribute__((weak)); +#endif +#ifdef USING_HW_SERIAL6 + #ifdef USART6 + HAL_HardwareSerial HSerial5(USART6); + #else + HAL_HardwareSerial HSerial5(UART6); + #endif + void serialEvent5() __attribute__((weak)); +#endif + +// Constructors //////////////////////////////////////////////////////////////// + +HAL_HardwareSerial::HAL_HardwareSerial(void *peripheral) { + if (peripheral == USART1) { + setRx(PIN_SERIAL1_RX); + setTx(PIN_SERIAL1_TX); + _uart_index = 0; + #ifdef DMA2_Stream2 + RX_DMA = { USART1, RCC_AHB1Periph_DMA2, 4, DMA2_Stream2 }; + #endif + #ifdef DMA1_Channel5 + RX_DMA = { USART1, RCC_AHBPeriph_DMA1, DMA1, DMA1_Channel5 }; + #endif + } + else if (peripheral == USART2) { + setRx(PIN_SERIAL2_RX); + setTx(PIN_SERIAL2_TX); + _uart_index = 1; + #ifdef DMA1_Stream5 + RX_DMA = { USART2, RCC_AHB1Periph_DMA1, 4, DMA1_Stream5 }; + #endif + #ifdef DMA1_Channel6 + RX_DMA = { USART2, RCC_AHBPeriph_DMA1, DMA1, DMA1_Channel6 }; + #endif + } + else if (peripheral == USART3) { + setRx(PIN_SERIAL3_RX); + setTx(PIN_SERIAL3_TX); + _uart_index = 2; + #ifdef DMA1_Stream1 + RX_DMA = { USART3, RCC_AHB1Periph_DMA1, 4, DMA1_Stream1 }; + #endif + #ifdef DMA1_Channel3 // F0 has no support for UART3, requires system remapping + RX_DMA = { USART3, RCC_AHBPeriph_DMA1, DMA1, DMA1_Channel3 }; + #endif + } + + #ifdef USART4 // Only F2 / F4 / F7 + else if (peripheral == USART4) { + #ifdef DMA1_Stream2 + RX_DMA = { USART4, RCC_AHB1Periph_DMA1, 4, DMA1_Stream2 }; + #endif + setRx(PIN_SERIAL4_RX); + setTx(PIN_SERIAL4_TX); + _uart_index = 3; + } + #endif + + #ifdef UART4 + else if (peripheral == UART4) { + #ifdef DMA1_Stream2 + RX_DMA = { UART4, RCC_AHB1Periph_DMA1, 4, DMA1_Stream2 }; + #endif + #ifdef DMA2_Channel3 // STM32F0xx has only 3 UARTs + RX_DMA = { UART4, RCC_AHBPeriph_DMA2, DMA2, DMA2_Channel3 }; + #endif + setRx(PIN_SERIAL4_RX); + setTx(PIN_SERIAL4_TX); + _uart_index = 3; + } + #endif + + #ifdef UART5 // Only F2 / F4 / F7 + else if (peripheral == UART5) { + #ifdef DMA1_Stream0 + RX_DMA = { UART5, RCC_AHB1Periph_DMA1, 4, DMA1_Stream0 }; + #endif + setRx(PIN_SERIAL5_RX); + setTx(PIN_SERIAL5_TX); + _uart_index = 4; + } + #endif + + #ifdef USART6 // Only F2 / F4 / F7 + else if (peripheral == USART6) { + #ifdef DMA2_Stream1 + RX_DMA = { USART6, RCC_AHB1Periph_DMA2, 4, DMA2_Stream1 }; + #endif + setRx(PIN_SERIAL6_RX); + setTx(PIN_SERIAL6_TX); + _uart_index = 5; + } + #endif + + else { // else get the pins of the first peripheral occurence in PinMap + _serial.pin_rx = pinmap_pin(peripheral, PinMap_UART_RX); + _serial.pin_tx = pinmap_pin(peripheral, PinMap_UART_TX); + } + + init(_serial.pin_rx, _serial.pin_tx); +} + +void HAL_HardwareSerial::setRx(uint32_t _rx) { + _serial.pin_rx = digitalPinToPinName(_rx); +} + +void HAL_HardwareSerial::setTx(uint32_t _tx) { + _serial.pin_tx = digitalPinToPinName(_tx); +} + +void HAL_HardwareSerial::init(PinName _rx, PinName _tx) { + _serial.pin_rx = _rx; + _serial.rx_buff = _rx_buffer; + _serial.rx_head = _serial.rx_tail = 0; + + _serial.pin_tx = _tx; + _serial.tx_buff = _tx_buffer; + _serial.tx_head = _serial.tx_tail = 0; +} + +// Actual interrupt handlers ////////////////////////////////////////////////////////////// + +/** + * @brief Read receive byte from uart + * @param obj : pointer to serial_t structure + * @retval last character received + */ +int HAL_HardwareSerial::_tx_complete_irq(serial_t *obj) { + // If interrupts are enabled, there must be more data in the output buffer. Send the next byte + obj->tx_tail = (obj->tx_tail + 1) % TX_BUFFER_SIZE; + + if (obj->tx_head == obj->tx_tail) return -1; + + return 0; +} + +// Public Methods ////////////////////////////////////////////////////////////// + +void HAL_HardwareSerial::begin(unsigned long baud, uint8_t config) { + uint32_t databits = 0, stopbits = 0, parity = 0; + + _baud = baud; + _config = config; + + // Manage databits + switch (config & 0x07) { + case 0x02: databits = 6; break; + case 0x04: databits = 7; break; + case 0x06: databits = 8; break; + default: databits = 0; break; + } + + if ((config & 0x30) == 0x30) { + parity = UART_PARITY_ODD; + databits++; + } + else if ((config & 0x20) == 0x20) { + parity = UART_PARITY_EVEN; + databits++; + } + else + parity = UART_PARITY_NONE; + + stopbits = (config & 0x08) == 0x08 ? UART_STOPBITS_2 : UART_STOPBITS_1; + + switch (databits) { + #ifdef UART_WORDLENGTH_7B + case 7: databits = UART_WORDLENGTH_7B; break; + #endif + case 8: databits = UART_WORDLENGTH_8B; break; + case 9: databits = UART_WORDLENGTH_9B; break; + default: + case 0: Error_Handler(); break; + } + + uart_init(&_serial, (uint32_t)baud, databits, parity, stopbits); + Serial_DMA_Read_Enable(); // Start the circular DMA serial reading process, no callback needed +} + +void HAL_HardwareSerial::end() { + flush(); // Wait for transmission of outgoing data + uart_deinit(&_serial); + _serial.rx_head = _serial.rx_tail; // Clear any received data +} + +// Update buffer head for DMA progress +void HAL_HardwareSerial::update_rx_head() { + + #if ENABLED(EMERGENCY_PARSER) + static uint32_t flag = 0; + while (flag != _serial.rx_head) { // send all available data to emergency parser immediately + emergency_parser.update(static_cast(this)->emergency_state, _serial.rx_buff[flag]); + flag = (flag + 1) % RX_BUFFER_SIZE; + } + #endif + + #if ANY(STM32F2xx, STM32F4xx, STM32F7xx) + _serial.rx_head = RX_BUFFER_SIZE - RX_DMA.dma_streamRX->NDTR; + #endif + + #if ANY(STM32F0xx, STM32F1xx) + _serial.rx_head = RX_BUFFER_SIZE - RX_DMA.dma_channelRX->CNDTR; + #endif + +} + +int HAL_HardwareSerial::available() { + update_rx_head(); + return ((unsigned int)(RX_BUFFER_SIZE + _serial.rx_head - _serial.rx_tail)) % RX_BUFFER_SIZE; +} + +int HAL_HardwareSerial::peek() { + update_rx_head(); + if (_serial.rx_head == _serial.rx_tail) return -1; + return _serial.rx_buff[_serial.rx_tail]; +} + +int HAL_HardwareSerial::read() { + update_rx_head(); + if (_serial.rx_head == _serial.rx_tail) return -1; // No chars if the head isn't ahead of the tail + + unsigned char c = _serial.rx_buff[_serial.rx_tail]; + _serial.rx_tail = (rx_buffer_index_t)(_serial.rx_tail + 1) % RX_BUFFER_SIZE; + return c; +} + +size_t HAL_HardwareSerial::write(uint8_t c) { // Interrupt based writing + tx_buffer_index_t i = (_serial.tx_head + 1) % TX_BUFFER_SIZE; + + // If the output buffer is full, there's nothing for it other than to + // wait for the interrupt handler to empty it a bit + while (i == _serial.tx_tail) { /* nada */ } // NOP, let the interrupt free up space for us + + _serial.tx_buff[_serial.tx_head] = c; + _serial.tx_head = i; + + if (!serial_tx_active(&_serial)) + uart_attach_tx_callback(&_serial, _tx_complete_irq); // Write next byte, launch interrupt + + return 1; +} + +void HAL_HardwareSerial::flush() { + while ((_serial.tx_head != _serial.tx_tail)) { /* nada */ } // nop, the interrupt handler will free up space for us +} + +#if ANY(STM32F2xx, STM32F4xx, STM32F7xx) + + void HAL_HardwareSerial::Serial_DMA_Read_Enable() { + RCC_AHB1PeriphClockCmd(RX_DMA.dma_rcc, ENABLE); // Enable DMA clock + + #ifdef STM32F7xx + RX_DMA.dma_streamRX->PAR = (uint32_t)(&RX_DMA.uart->RDR); // RX peripheral receive address (usart) F7 + #else + RX_DMA.dma_streamRX->PAR = (uint32_t)(&RX_DMA.uart->DR); // RX peripheral address (usart) F2 / F4 + #endif + RX_DMA.dma_streamRX->M0AR = (uint32_t)_serial.rx_buff; // RX destination address (memory) + RX_DMA.dma_streamRX->NDTR = RX_BUFFER_SIZE; // RX buffer size + + RX_DMA.dma_streamRX->CR = (RX_DMA.dma_channel << 25); // RX channel selection, set to 0 all the other CR bits + + RX_DMA.dma_streamRX->CR |= (3 << 16); // RX priority level: Very High + + //RX_DMA.dma_streamRX->CR &= ~(3 << 13); // RX memory data size: 8 bit + //RX_DMA.dma_streamRX->CR &= ~(3 << 11); // RX peripheral data size: 8 bit + RX_DMA.dma_streamRX->CR |= (1 << 10); // RX memory increment mode + //RX_DMA.dma_streamRX->CR &= ~(1 << 9); // RX peripheral no increment mode + RX_DMA.dma_streamRX->CR |= (1 << 8); // RX circular mode enabled + //RX_DMA.dma_streamRX->CR &= ~(1 << 6); // RX data transfer direction: Peripheral-to-memory + RX_DMA.uart->CR3 |= (1 << 6); // Enable DMA receiver (DMAR) + RX_DMA.dma_streamRX->CR |= (1 << 0); // RX enable DMA + } + +#endif // STM32F2xx || STM32F4xx || STM32F7xx + +#if ANY(STM32F0xx, STM32F1xx) + + void HAL_HardwareSerial::Serial_DMA_Read_Enable() { + RCC_AHBPeriphClockCmd(RX_DMA.dma_rcc, ENABLE); // enable DMA clock + + RX_DMA.dma_channelRX->CPAR = (uint32_t)(&RX_DMA.uart->DR); // RX peripheral address (usart) + RX_DMA.dma_channelRX->CMAR = (uint32_t)_serial.rx_buff; // RX destination address (memory) + RX_DMA.dma_channelRX->CNDTR = RX_BUFFER_SIZE; // RX buffer size + + RX_DMA.dma_channelRX->CCR = 0; // RX channel selection, set to 0 all the other CR bits + + RX_DMA.dma_channelRX->CCR |= (3<<12); // RX priority level: Very High + + //RX_DMA.dma_channelRX->CCR &= ~(1<<10); // RX memory data size: 8 bit + //RX_DMA.dma_channelRX->CCR &= ~(1<<8); // RX peripheral data size: 8 bit + RX_DMA.dma_channelRX->CCR |= (1<<7); // RX memory increment mode + //RX_DMA.dma_channelRX->CCR &= ~(1<<6); // RX peripheral no increment mode + RX_DMA.dma_channelRX->CCR |= (1<<5); // RX circular mode enabled + //RX_DMA.dma_channelRX->CCR &= ~(1<<4); // RX data transfer direction: Peripheral-to-memory + + RX_DMA.uart->CR3 |= (1<<6); // enable DMA receiver (DMAR) + RX_DMA.dma_channelRX->CCR |= (1<<0); // RX enable DMA + } + +#endif // STM32F0xx || STM32F1xx + +#endif // SERIAL_DMA && HAL_UART_MODULE_ENABLED && !HAL_UART_MODULE_ONLY +#endif // HAL_STM32 diff --git a/Marlin/src/HAL/STM32/HardwareSerial.h b/Marlin/src/HAL/STM32/HardwareSerial.h new file mode 100644 index 0000000000000..cc564322b4d5a --- /dev/null +++ b/Marlin/src/HAL/STM32/HardwareSerial.h @@ -0,0 +1,85 @@ +/** + * Marlin 3D Printer Firmware + * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * + * Based on Sprinter and grbl. + * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm + * Copyright (c) 2017 Victor Perez + * + * 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 . + * + */ +#pragma once + +// +// HAL_HardwareSerial Class. Adapted from Arduino HardwareSerial. +// + +#if RX_BUFFER_SIZE == 0 + #undef RX_BUFFER_SIZE + #define RX_BUFFER_SIZE 128 +#endif + +#if TX_BUFFER_SIZE == 0 + #undef TX_BUFFER_SIZE + #define TX_BUFFER_SIZE 64 +#endif + +typedef struct { + USART_TypeDef * uart; + uint32_t dma_rcc; + #if ANY(STM32F0xx, STM32F1xx) // F0 / F1 + DMA_TypeDef * dma_controller; + DMA_Channel_TypeDef * dma_channelRX; + #else // F2 / F4 / F7 + uint32_t dma_channel; + DMA_Stream_TypeDef * dma_streamRX; + #endif +} DMA_CFG; + +class HAL_HardwareSerial : public Stream { + protected: + // Don't put any members after these buffers, since only the first + // 32 bytes of this struct can be accessed quickly using the ldd instruction. + unsigned char _rx_buffer[RX_BUFFER_SIZE]; + unsigned char _tx_buffer[TX_BUFFER_SIZE]; + + serial_t _serial; + + public: + HAL_HardwareSerial(void *peripheral); + void begin(unsigned long, uint8_t); + void end(); + virtual int available(); + virtual int read(); + virtual int peek(); + virtual size_t write(uint8_t); + virtual void flush(); + operator bool() { return true; } + + void setRx(uint32_t _rx); + void setTx(uint32_t _tx); + + static int _tx_complete_irq(serial_t *obj); // Interrupt handler + + private: + uint8_t _uart_index; + bool _rx_enabled; + uint8_t _config; + unsigned long _baud; + void init(PinName _rx, PinName _tx); + void update_rx_head(); + DMA_CFG RX_DMA; + void Serial_DMA_Read_Enable(); +}; diff --git a/Marlin/src/HAL/STM32/MarlinSerial.cpp b/Marlin/src/HAL/STM32/MarlinSerial.cpp index 9f0b003a316b4..c4bc62994908a 100644 --- a/Marlin/src/HAL/STM32/MarlinSerial.cpp +++ b/Marlin/src/HAL/STM32/MarlinSerial.cpp @@ -47,10 +47,15 @@ #define USART9 UART9 #endif -#define DECLARE_SERIAL_PORT(ser_num) \ - void _rx_complete_irq_ ## ser_num (serial_t * obj); \ - MSerialT MSerial ## ser_num (true, USART ## ser_num, &_rx_complete_irq_ ## ser_num); \ - void _rx_complete_irq_ ## ser_num (serial_t * obj) { MSerial ## ser_num ._rx_complete_irq(obj); } +#if ENABLED(SERIAL_DMA) + #define DECLARE_SERIAL_PORT(ser_num) \ + MSerialT MSerial ## ser_num (true, USART ## ser_num); +#else + #define DECLARE_SERIAL_PORT(ser_num) \ + void _rx_complete_irq_ ## ser_num (serial_t * obj); \ + MSerialT MSerial ## ser_num (true, USART ## ser_num, &_rx_complete_irq_ ## ser_num); \ + void _rx_complete_irq_ ## ser_num (serial_t * obj) { MSerial ## ser_num ._rx_complete_irq(obj); } +#endif #if USING_HW_SERIAL1 DECLARE_SERIAL_PORT(1) @@ -87,33 +92,38 @@ #endif void MarlinSerial::begin(unsigned long baud, uint8_t config) { - HardwareSerial::begin(baud, config); - // Replace the IRQ callback with the one we have defined - TERN_(EMERGENCY_PARSER, _serial.rx_callback = _rx_callback); + #if ENABLED(SERIAL_DMA) + HAL_HardwareSerial::begin(baud, config); + #else + HardwareSerial::begin(baud, config); + // Replace the IRQ callback with the one we have defined + TERN_(EMERGENCY_PARSER, _serial.rx_callback = _rx_callback); + #endif } -// This function is Copyright (c) 2006 Nicholas Zambetti. -void MarlinSerial::_rx_complete_irq(serial_t *obj) { - // No Parity error, read byte and store it in the buffer if there is room - unsigned char c; +#if DISABLED(SERIAL_DMA) - if (uart_getc(obj, &c) == 0) { + // This function Copyright (c) 2006 Nicholas Zambetti. + void MarlinSerial::_rx_complete_irq(serial_t *obj) { + // No Parity error, read byte and store it in the buffer if there is room + unsigned char c; + if (uart_getc(obj, &c) == 0) { - rx_buffer_index_t i = (unsigned int)(obj->rx_head + 1) % SERIAL_RX_BUFFER_SIZE; + rx_buffer_index_t i = (unsigned int)(obj->rx_head + 1) % SERIAL_RX_BUFFER_SIZE; - // if we should be storing the received character into the location - // just before the tail (meaning that the head would advance to the - // current location of the tail), we're about to overflow the buffer - // and so we don't write the character or advance the head. - if (i != obj->rx_tail) { - obj->rx_buff[obj->rx_head] = c; - obj->rx_head = i; - } + // If tail overlaps head the buffer is overflowed + // so don't write the character or advance the head. + if (i != obj->rx_tail) { + obj->rx_buff[obj->rx_head] = c; + obj->rx_head = i; + } - #if ENABLED(EMERGENCY_PARSER) - emergency_parser.update(static_cast(this)->emergency_state, c); - #endif + #if ENABLED(EMERGENCY_PARSER) + emergency_parser.update(static_cast(this)->emergency_state, c); + #endif + } } -} + +#endif // !SERIAL_DMA #endif // HAL_STM32 diff --git a/Marlin/src/HAL/STM32/MarlinSerial.h b/Marlin/src/HAL/STM32/MarlinSerial.h index bf861fb8a79a9..4ab1e4e75a6bf 100644 --- a/Marlin/src/HAL/STM32/MarlinSerial.h +++ b/Marlin/src/HAL/STM32/MarlinSerial.h @@ -27,23 +27,38 @@ #include "../../feature/e_parser.h" #endif +#if ENABLED(SERIAL_DMA) + #include "HardwareSerial.h" +#endif + #include "../../core/serial_hook.h" -typedef void (*usart_rx_callback_t)(serial_t * obj); +#if ENABLED(SERIAL_DMA) + + struct MarlinSerial : public HAL_HardwareSerial { + MarlinSerial(void *peripheral) : HAL_HardwareSerial(peripheral) { } + void begin(unsigned long baud, uint8_t config); + inline void begin(unsigned long baud) { begin(baud, SERIAL_8N1); } + }; + +#else // Arduino non-DMA -struct MarlinSerial : public HardwareSerial { - MarlinSerial(void *peripheral, usart_rx_callback_t rx_callback) : - HardwareSerial(peripheral), _rx_callback(rx_callback) - { } + typedef void (*usart_rx_callback_t)(serial_t * obj); - void begin(unsigned long baud, uint8_t config); - inline void begin(unsigned long baud) { begin(baud, SERIAL_8N1); } + struct MarlinSerial : public HardwareSerial { + MarlinSerial(void *peripheral, usart_rx_callback_t rx_callback) + : HardwareSerial(peripheral), _rx_callback(rx_callback) { } - void _rx_complete_irq(serial_t *obj); + void begin(unsigned long baud, uint8_t config); + inline void begin(unsigned long baud) { begin(baud, SERIAL_8N1); } -protected: - usart_rx_callback_t _rx_callback; -}; + void _rx_complete_irq(serial_t *obj); + + protected: + usart_rx_callback_t _rx_callback; + }; + +#endif typedef Serial1Class MSerialT; extern MSerialT MSerial1; diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h index 00e90b618356f..70eba0d60c9f3 100644 --- a/Marlin/src/inc/SanityCheck.h +++ b/Marlin/src/inc/SanityCheck.h @@ -254,6 +254,15 @@ static_assert(COUNT(arm) == LOGICAL_AXES, "AXIS_RELATIVE_MODES must contain " _L #error "SERIAL_XON_XOFF and SERIAL_STATS_* features not supported on USB-native AVR devices." #endif +// Serial DMA is only available for some STM32 MCUs +#if ENABLED(SERIAL_DMA) + #if !HAL_STM32 || NONE(STM32F0xx, STM32F1xx, STM32F2xx, STM32F4xx, STM32F7xx) + #error "SERIAL_DMA is only available for some STM32 MCUs and requires HAL/STM32." + #elif !defined(HAL_UART_MODULE_ENABLED) || defined(HAL_UART_MODULE_ONLY) + #error "SERIAL_DMA requires STM32 platform HAL UART (without HAL_UART_MODULE_ONLY)." + #endif +#endif + /** * Multiple Stepper Drivers Per Axis */ diff --git a/buildroot/tests/STM32F103RE_btt b/buildroot/tests/STM32F103RE_btt index 97d7ffec4bdd5..197ca775989a4 100755 --- a/buildroot/tests/STM32F103RE_btt +++ b/buildroot/tests/STM32F103RE_btt @@ -13,6 +13,7 @@ restore_configs opt_set MOTHERBOARD BOARD_BTT_SKR_E3_DIP \ SERIAL_PORT 1 SERIAL_PORT_2 -1 \ X_DRIVER_TYPE TMC2209 Y_DRIVER_TYPE TMC2130 +opt_enable SERIAL_DMA exec_test $1 $2 "BTT SKR E3 DIP 1.0 | Mixed TMC Drivers" "$3" # clean up