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/LPC1768/include/SPI.h | 182 +++++++++++++++++++++++++++++++++++
1 file changed, 182 insertions(+)
create mode 100644 Marlin/src/HAL/LPC1768/include/SPI.h
(limited to 'Marlin/src/HAL/LPC1768/include/SPI.h')
diff --git a/Marlin/src/HAL/LPC1768/include/SPI.h b/Marlin/src/HAL/LPC1768/include/SPI.h
new file mode 100644
index 0000000..ecd91f6
--- /dev/null
+++ b/Marlin/src/HAL/LPC1768/include/SPI.h
@@ -0,0 +1,182 @@
+/**
+ * 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 .
+ *
+ */
+#pragma once
+
+#include "../../shared/HAL_SPI.h"
+
+#include
+#include
+#include
+
+//#define MSBFIRST 1
+
+#define SPI_MODE0 0
+#define SPI_MODE1 1
+#define SPI_MODE2 2
+#define SPI_MODE3 3
+
+#define DATA_SIZE_8BIT SSP_DATABIT_8
+#define DATA_SIZE_16BIT SSP_DATABIT_16
+
+#define SPI_CLOCK_MAX_TFT 30000000UL
+#define SPI_CLOCK_DIV2 8333333 //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED
+#define SPI_CLOCK_DIV4 4166667 //(SCR: 5) desired: 4,000,000 actual: 4,166,667 +4.2% SPI_HALF_SPEED
+#define SPI_CLOCK_DIV8 2083333 //(SCR: 11) desired: 2,000,000 actual: 2,083,333 +4.2% SPI_QUARTER_SPEED
+#define SPI_CLOCK_DIV16 1000000 //(SCR: 24) desired: 1,000,000 actual: 1,000,000 SPI_EIGHTH_SPEED
+#define SPI_CLOCK_DIV32 500000 //(SCR: 49) desired: 500,000 actual: 500,000 SPI_SPEED_5
+#define SPI_CLOCK_DIV64 250000 //(SCR: 99) desired: 250,000 actual: 250,000 SPI_SPEED_6
+#define SPI_CLOCK_DIV128 125000 //(SCR:199) desired: 125,000 actual: 125,000 Default from HAL.h
+
+#define SPI_CLOCK_MAX SPI_CLOCK_DIV2
+
+#define BOARD_NR_SPI 2
+
+//#define BOARD_SPI1_NSS_PIN PA4 ?!
+#define BOARD_SPI1_SCK_PIN P0_15
+#define BOARD_SPI1_MISO_PIN P0_17
+#define BOARD_SPI1_MOSI_PIN P0_18
+
+//#define BOARD_SPI2_NSS_PIN PB12 ?!
+#define BOARD_SPI2_SCK_PIN P0_07
+#define BOARD_SPI2_MISO_PIN P0_08
+#define BOARD_SPI2_MOSI_PIN P0_09
+
+class SPISettings {
+public:
+ SPISettings(uint32_t spiRate, int inBitOrder, int inDataMode) {
+ init_AlwaysInline(spiRate2Clock(spiRate), inBitOrder, inDataMode, DATA_SIZE_8BIT);
+ }
+ SPISettings(uint32_t inClock, uint8_t inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
+ if (__builtin_constant_p(inClock))
+ init_AlwaysInline(inClock, inBitOrder, inDataMode, inDataSize);
+ else
+ init_MightInline(inClock, inBitOrder, inDataMode, inDataSize);
+ }
+ SPISettings() {
+ init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
+ }
+
+ //uint32_t spiRate() const { return spi_speed; }
+
+ static inline uint32_t spiRate2Clock(uint32_t spiRate) {
+ uint32_t Marlin_speed[7]; // CPSR is always 2
+ Marlin_speed[0] = 8333333; //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED
+ Marlin_speed[1] = 4166667; //(SCR: 5) desired: 4,000,000 actual: 4,166,667 +4.2% SPI_HALF_SPEED
+ Marlin_speed[2] = 2083333; //(SCR: 11) desired: 2,000,000 actual: 2,083,333 +4.2% SPI_QUARTER_SPEED
+ Marlin_speed[3] = 1000000; //(SCR: 24) desired: 1,000,000 actual: 1,000,000 SPI_EIGHTH_SPEED
+ Marlin_speed[4] = 500000; //(SCR: 49) desired: 500,000 actual: 500,000 SPI_SPEED_5
+ Marlin_speed[5] = 250000; //(SCR: 99) desired: 250,000 actual: 250,000 SPI_SPEED_6
+ Marlin_speed[6] = 125000; //(SCR:199) desired: 125,000 actual: 125,000 Default from HAL.h
+ return Marlin_speed[spiRate > 6 ? 6 : spiRate];
+ }
+
+private:
+ void init_MightInline(uint32_t inClock, uint8_t inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
+ init_AlwaysInline(inClock, inBitOrder, inDataMode, inDataSize);
+ }
+ void init_AlwaysInline(uint32_t inClock, uint8_t inBitOrder, uint8_t inDataMode, uint32_t inDataSize) __attribute__((__always_inline__)) {
+ clock = inClock;
+ bitOrder = inBitOrder;
+ dataMode = inDataMode;
+ dataSize = inDataSize;
+ }
+
+ //uint32_t spi_speed;
+ uint32_t clock;
+ uint32_t dataSize;
+ //uint32_t clockDivider;
+ uint8_t bitOrder;
+ uint8_t dataMode;
+ LPC_SSP_TypeDef *spi_d;
+
+ friend class SPIClass;
+};
+
+/**
+ * @brief Wirish SPI interface.
+ *
+ * This is the same interface is available across HAL
+ *
+ * This implementation uses software slave management, so the caller
+ * is responsible for controlling the slave select line.
+ */
+class SPIClass {
+public:
+ /**
+ * @param spiPortNumber Number of the SPI port to manage.
+ */
+ SPIClass(uint8_t spiPortNumber);
+
+ /**
+ * Init using pins
+ */
+ SPIClass(pin_t mosi, pin_t miso, pin_t sclk, pin_t ssel = (pin_t)-1);
+
+ /**
+ * Select and configure the current selected SPI device to use
+ */
+ void begin();
+
+ /**
+ * Disable the current SPI device
+ */
+ void end();
+
+ void beginTransaction(const SPISettings&);
+ void endTransaction() {}
+
+ // Transfer using 1 "Data Size"
+ uint8_t transfer(uint16_t data);
+ // Transfer 2 bytes in 8 bit mode
+ uint16_t transfer16(uint16_t data);
+
+ void send(uint8_t data);
+
+ uint16_t read();
+ void read(uint8_t *buf, uint32_t len);
+
+ void dmaSend(void *buf, uint16_t length, bool minc);
+
+ /**
+ * @brief Sets the number of the SPI peripheral to be used by
+ * this HardwareSPI instance.
+ *
+ * @param spi_num Number of the SPI port. 1-2 in low density devices
+ * or 1-3 in high density devices.
+ */
+ void setModule(uint8_t device);
+
+ void setClock(uint32_t clock);
+ void setBitOrder(uint8_t bitOrder);
+ void setDataMode(uint8_t dataMode);
+ void setDataSize(uint32_t ds);
+
+ inline uint32_t getDataSize() { return _currentSetting->dataSize; }
+
+private:
+ SPISettings _settings[BOARD_NR_SPI];
+ SPISettings *_currentSetting;
+
+ void updateSettings();
+};
+
+extern SPIClass SPI;
--
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