HAL for DUE architecture
This commit is contained in:
Christopher Pepper
committed by
Scott Lahteine
Scott Lahteine
parent
4b16fa3272
commit
cfef925559
336
Marlin/src/HAL/HAL_DUE/HAL_spi_Due.cpp
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336
Marlin/src/HAL/HAL_DUE/HAL_spi_Due.cpp
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* Software SPI functions originally from Arduino Sd2Card Library
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* Copyright (C) 2009 by William Greiman
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*/
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/**
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* Description: HAL for Arduino Due and compatible (SAM3X8E)
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*
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* For ARDUINO_ARCH_SAM
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*/
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#ifdef ARDUINO_ARCH_SAM
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include "../../../MarlinConfig.h"
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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#if ENABLED(SOFTWARE_SPI)
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// --------------------------------------------------------------------------
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// software SPI
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// --------------------------------------------------------------------------
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// bitbanging transfer
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// run at ~100KHz (necessary for init)
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static uint8_t spiTransfer(uint8_t b) { // using Mode 0
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for (int bits = 0; bits < 8; bits++) {
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if (b & 0x80) {
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WRITE(MOSI_PIN, HIGH);
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}
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else {
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WRITE(MOSI_PIN, LOW);
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}
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b <<= 1;
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WRITE(SCK_PIN, HIGH);
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delayMicroseconds(5U);
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if (READ(MISO_PIN)) {
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b |= 1;
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}
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WRITE(SCK_PIN, LOW);
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delayMicroseconds(5U);
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}
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return b;
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}
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void spiBegin() {
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SET_OUTPUT(SS_PIN);
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WRITE(SS_PIN, HIGH);
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SET_OUTPUT(SCK_PIN);
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SET_INPUT(MISO_PIN);
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SET_OUTPUT(MOSI_PIN);
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}
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void spiInit(uint8_t spiRate) {
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UNUSED(spiRate);
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WRITE(SS_PIN, HIGH);
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WRITE(MOSI_PIN, HIGH);
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WRITE(SCK_PIN, LOW);
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}
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uint8_t spiRec() {
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WRITE(SS_PIN, LOW);
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uint8_t b = spiTransfer(0xff);
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WRITE(SS_PIN, HIGH);
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return b;
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}
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void spiRead(uint8_t*buf, uint16_t nbyte) {
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if (nbyte == 0) return;
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WRITE(SS_PIN, LOW);
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for (int i = 0; i < nbyte; i++) {
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buf[i] = spiTransfer(0xff);
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}
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WRITE(SS_PIN, HIGH);
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}
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void spiSend(uint8_t b) {
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WRITE(SS_PIN, LOW);
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uint8_t response = spiTransfer(b);
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UNUSED(response);
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WRITE(SS_PIN, HIGH);
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}
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static void spiSend(const uint8_t* buf, size_t n) {
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uint8_t response;
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if (n == 0) return;
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WRITE(SS_PIN, LOW);
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for (uint16_t i = 0; i < n; i++) {
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response = spiTransfer(buf[i]);
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}
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UNUSED(response);
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WRITE(SS_PIN, HIGH);
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}
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void spiSendBlock(uint8_t token, const uint8_t* buf) {
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uint8_t response;
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WRITE(SS_PIN, LOW);
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response = spiTransfer(token);
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for (uint16_t i = 0; i < 512; i++) {
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response = spiTransfer(buf[i]);
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}
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UNUSED(response);
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WRITE(SS_PIN, HIGH);
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}
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#else
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// --------------------------------------------------------------------------
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// hardware SPI
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// --------------------------------------------------------------------------
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// 8.4 MHz, 4 MHz, 2 MHz, 1 MHz, 0.5 MHz, 0.329 MHz, 0.329 MHz
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int spiDueDividors[] = { 10, 21, 42, 84, 168, 255, 255 };
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bool spiInitMaded = false;
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void spiBegin() {
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if(spiInitMaded == false) {
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// Configure SPI pins
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PIO_Configure(
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g_APinDescription[SCK_PIN].pPort,
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g_APinDescription[SCK_PIN].ulPinType,
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g_APinDescription[SCK_PIN].ulPin,
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g_APinDescription[SCK_PIN].ulPinConfiguration);
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PIO_Configure(
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g_APinDescription[MOSI_PIN].pPort,
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g_APinDescription[MOSI_PIN].ulPinType,
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g_APinDescription[MOSI_PIN].ulPin,
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g_APinDescription[MOSI_PIN].ulPinConfiguration);
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PIO_Configure(
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g_APinDescription[MISO_PIN].pPort,
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g_APinDescription[MISO_PIN].ulPinType,
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g_APinDescription[MISO_PIN].ulPin,
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g_APinDescription[MISO_PIN].ulPinConfiguration);
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// set master mode, peripheral select, fault detection
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SPI_Configure(SPI0, ID_SPI0, SPI_MR_MSTR | SPI_MR_MODFDIS | SPI_MR_PS);
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SPI_Enable(SPI0);
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#if MB(ALLIGATOR)
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SET_OUTPUT(DAC0_SYNC);
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#if EXTRUDERS > 1
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SET_OUTPUT(DAC1_SYNC);
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WRITE(DAC1_SYNC, HIGH);
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#endif
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SET_OUTPUT(SPI_EEPROM1_CS);
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SET_OUTPUT(SPI_EEPROM2_CS);
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SET_OUTPUT(SPI_FLASH_CS);
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WRITE(DAC0_SYNC, HIGH);
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WRITE(SPI_EEPROM1_CS, HIGH );
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WRITE(SPI_EEPROM2_CS, HIGH );
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WRITE(SPI_FLASH_CS, HIGH );
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WRITE(SS_PIN, HIGH );
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#endif // MB(ALLIGATOR)
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PIO_Configure(
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g_APinDescription[SPI_PIN].pPort,
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g_APinDescription[SPI_PIN].ulPinType,
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g_APinDescription[SPI_PIN].ulPin,
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g_APinDescription[SPI_PIN].ulPinConfiguration);
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spiInit(1);
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spiInitMaded = true;
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}
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}
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void spiInit(uint8_t spiRate) {
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if(spiInitMaded == false) {
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if(spiRate > 6) spiRate = 1;
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#if MB(ALLIGATOR)
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// Set SPI mode 1, clock, select not active after transfer, with delay between transfers
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SPI_ConfigureNPCS(SPI0, SPI_CHAN_DAC,
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SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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SPI_CSR_DLYBCT(1));
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// Set SPI mode 0, clock, select not active after transfer, with delay between transfers
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SPI_ConfigureNPCS(SPI0, SPI_CHAN_EEPROM1, SPI_CSR_NCPHA |
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SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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SPI_CSR_DLYBCT(1));
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#endif//MB(ALLIGATOR)
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// Set SPI mode 0, clock, select not active after transfer, with delay between transfers
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SPI_ConfigureNPCS(SPI0, SPI_CHAN, SPI_CSR_NCPHA |
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SPI_CSR_CSAAT | SPI_CSR_SCBR(spiDueDividors[spiRate]) |
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SPI_CSR_DLYBCT(1));
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SPI_Enable(SPI0);
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spiInitMaded = true;
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}
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}
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// Write single byte to SPI
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void spiSend(byte b) {
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// write byte with address and end transmission flag
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SPI0->SPI_TDR = (uint32_t)b | SPI_PCS(SPI_CHAN) | SPI_TDR_LASTXFER;
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// wait for transmit register empty
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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// wait for receive register
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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// clear status
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SPI0->SPI_RDR;
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//delayMicroseconds(1U);
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}
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void spiSend(const uint8_t* buf, size_t n) {
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if (n == 0) return;
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for (size_t i = 0; i < n - 1; i++) {
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SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(SPI_CHAN);
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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SPI0->SPI_RDR;
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//delayMicroseconds(1U);
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}
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spiSend(buf[n - 1]);
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}
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void spiSend(uint32_t chan, byte b) {
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uint8_t dummy_read = 0;
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// wait for transmit register empty
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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// write byte with address and end transmission flag
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SPI0->SPI_TDR = (uint32_t)b | SPI_PCS(chan) | SPI_TDR_LASTXFER;
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// wait for receive register
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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// clear status
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
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dummy_read = SPI0->SPI_RDR;
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UNUSED(dummy_read);
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}
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void spiSend(uint32_t chan, const uint8_t* buf, size_t n) {
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uint8_t dummy_read = 0;
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if (n == 0) return;
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for (int i = 0; i < (int)n - 1; i++) {
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(chan);
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
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dummy_read = SPI0->SPI_RDR;
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UNUSED(dummy_read);
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}
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spiSend(chan, buf[n - 1]);
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}
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// Read single byte from SPI
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uint8_t spiRec() {
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// write dummy byte with address and end transmission flag
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SPI0->SPI_TDR = 0x000000FF | SPI_PCS(SPI_CHAN) | SPI_TDR_LASTXFER;
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// wait for transmit register empty
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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// wait for receive register
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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// get byte from receive register
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//delayMicroseconds(1U);
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return SPI0->SPI_RDR;
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}
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uint8_t spiRec(uint32_t chan) {
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uint8_t spirec_tmp;
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// wait for transmit register empty
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 1)
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spirec_tmp = SPI0->SPI_RDR;
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UNUSED(spirec_tmp);
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// write dummy byte with address and end transmission flag
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SPI0->SPI_TDR = 0x000000FF | SPI_PCS(chan) | SPI_TDR_LASTXFER;
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// wait for receive register
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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// get byte from receive register
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return SPI0->SPI_RDR;
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}
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// Read from SPI into buffer
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void spiRead(uint8_t*buf, uint16_t nbyte) {
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if (nbyte-- == 0) return;
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for (int i = 0; i < nbyte; i++) {
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//while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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SPI0->SPI_TDR = 0x000000FF | SPI_PCS(SPI_CHAN);
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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buf[i] = SPI0->SPI_RDR;
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//delayMicroseconds(1U);
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}
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buf[nbyte] = spiRec();
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}
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// Write from buffer to SPI
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void spiSendBlock(uint8_t token, const uint8_t* buf) {
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SPI0->SPI_TDR = (uint32_t)token | SPI_PCS(SPI_CHAN);
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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//while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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//SPI0->SPI_RDR;
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for (int i = 0; i < 511; i++) {
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SPI0->SPI_TDR = (uint32_t)buf[i] | SPI_PCS(SPI_CHAN);
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while ((SPI0->SPI_SR & SPI_SR_TDRE) == 0);
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while ((SPI0->SPI_SR & SPI_SR_RDRF) == 0);
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SPI0->SPI_RDR;
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//delayMicroseconds(1U);
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}
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spiSend(buf[511]);
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}
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#endif // ENABLED(SOFTWARE_SPI)
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#endif // ARDUINO_ARCH_SAM
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