Initial commit

5 files changed, 457 insertions, 0 deletions

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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#include "../../shared/HAL_SPI.h"
+
+#include <stdint.h>
+#include <lpc17xx_ssp.h>
+#include <lpc17xx_gpdma.h>
+
+//#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;
diff --git a/Marlin/src/HAL/LPC1768/include/digipot_mcp4451_I2C_routines.c b/Marlin/src/HAL/LPC1768/include/digipot_mcp4451_I2C_routines.c
new file mode 100644
index 0000000..f442ab7
--- /dev/null
+++ b/Marlin/src/HAL/LPC1768/include/digipot_mcp4451_I2C_routines.c
@@ -0,0 +1,106 @@
+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * digipot_mcp4451_I2C_routines.c
+ * Adapted from https://www-users.cs.york.ac.uk/~pcc/MCP/HAPR-Course-web/CMSIS/examples/html/master_8c_source.html
+ */
+
+#ifdef TARGET_LPC1768
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#if MB(MKS_SBASE)
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+#include "digipot_mcp4451_I2C_routines.h"
+
+// These two routines are exact copies of the lpc17xx_i2c.c routines.  Couldn't link to
+// to the lpc17xx_i2c.c routines so had to copy them into this file & rename them.
+
+static uint32_t _I2C_Start(LPC_I2C_TypeDef *I2Cx) {
+  // Reset STA, STO, SI
+  I2Cx->I2CONCLR = I2C_I2CONCLR_SIC|I2C_I2CONCLR_STOC|I2C_I2CONCLR_STAC;
+
+  // Enter to Master Transmitter mode
+  I2Cx->I2CONSET = I2C_I2CONSET_STA;
+
+  // Wait for complete
+  while (!(I2Cx->I2CONSET & I2C_I2CONSET_SI));
+  I2Cx->I2CONCLR = I2C_I2CONCLR_STAC;
+  return (I2Cx->I2STAT & I2C_STAT_CODE_BITMASK);
+}
+
+static void _I2C_Stop(LPC_I2C_TypeDef *I2Cx) {
+  // Make sure start bit is not active
+  if (I2Cx->I2CONSET & I2C_I2CONSET_STA)
+    I2Cx->I2CONCLR = I2C_I2CONCLR_STAC;
+
+  I2Cx->I2CONSET = I2C_I2CONSET_STO|I2C_I2CONSET_AA;
+  I2Cx->I2CONCLR = I2C_I2CONCLR_SIC;
+}
+
+I2C_M_SETUP_Type transferMCfg;
+
+#define I2C_status (LPC_I2C1->I2STAT & I2C_STAT_CODE_BITMASK)
+
+uint8_t digipot_mcp4451_start(uint8_t sla) {  // send slave address and write bit
+  // Sometimes TX data ACK or NAK status is returned.  That mean the start state didn't
+  // happen which means only the value of the slave address was send.  Keep looping until
+  // the slave address and write bit are actually sent.
+  do {
+    _I2C_Stop(I2CDEV_M); // output stop state on I2C bus
+    _I2C_Start(I2CDEV_M); // output start state on I2C bus
+    while ((I2C_status != I2C_I2STAT_M_TX_START)
+        && (I2C_status != I2C_I2STAT_M_TX_RESTART)
+        && (I2C_status != I2C_I2STAT_M_TX_DAT_ACK)
+        && (I2C_status != I2C_I2STAT_M_TX_DAT_NACK));  //wait for start to be asserted
+
+    LPC_I2C1->I2CONCLR = I2C_I2CONCLR_STAC; // clear start state before tansmitting slave address
+    LPC_I2C1->I2DAT = (sla << 1) & I2C_I2DAT_BITMASK; // transmit slave address & write bit
+    LPC_I2C1->I2CONSET = I2C_I2CONSET_AA;
+    LPC_I2C1->I2CONCLR = I2C_I2CONCLR_SIC;
+    while ((I2C_status != I2C_I2STAT_M_TX_SLAW_ACK)
+        && (I2C_status != I2C_I2STAT_M_TX_SLAW_NACK)
+        && (I2C_status != I2C_I2STAT_M_TX_DAT_ACK)
+        && (I2C_status != I2C_I2STAT_M_TX_DAT_NACK)) { /* wait for slaw to finish */ }
+  } while ( (I2C_status == I2C_I2STAT_M_TX_DAT_ACK) || (I2C_status == I2C_I2STAT_M_TX_DAT_NACK));
+  return 1;
+}
+
+uint8_t digipot_mcp4451_send_byte(uint8_t data) {
+  LPC_I2C1->I2DAT = data & I2C_I2DAT_BITMASK; // transmit data
+  LPC_I2C1->I2CONSET = I2C_I2CONSET_AA;
+  LPC_I2C1->I2CONCLR = I2C_I2CONCLR_SIC;
+  while (I2C_status != I2C_I2STAT_M_TX_DAT_ACK && I2C_status != I2C_I2STAT_M_TX_DAT_NACK);  // wait for xmit to finish
+  return 1;
+}
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif // MB(MKS_SBASE)
+#endif // TARGET_LPC1768
diff --git a/Marlin/src/HAL/LPC1768/include/digipot_mcp4451_I2C_routines.h b/Marlin/src/HAL/LPC1768/include/digipot_mcp4451_I2C_routines.h
new file mode 100644
index 0000000..9b6c62b
--- /dev/null
+++ b/Marlin/src/HAL/LPC1768/include/digipot_mcp4451_I2C_routines.h
@@ -0,0 +1,43 @@
+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * digipot_mcp4451_I2C_routines.h
+ * Adapted from https://www-users.cs.york.ac.uk/~pcc/MCP/HAPR-Course-web/CMSIS/examples/html/master_8c_source.html
+ */
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+#include <lpc17xx_i2c.h>
+#include <lpc17xx_pinsel.h>
+#include <lpc17xx_libcfg_default.h>
+#include "i2c_util.h"
+
+uint8_t digipot_mcp4451_start(uint8_t sla);
+uint8_t digipot_mcp4451_send_byte(uint8_t data);
+
+#ifdef __cplusplus
+  }
+#endif
diff --git a/Marlin/src/HAL/LPC1768/include/i2c_util.c b/Marlin/src/HAL/LPC1768/include/i2c_util.c
new file mode 100644
index 0000000..e52fb7c
--- /dev/null
+++ b/Marlin/src/HAL/LPC1768/include/i2c_util.c
@@ -0,0 +1,70 @@
+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * HAL_LPC1768/include/i2c_util.c
+ */
+
+#ifdef TARGET_LPC1768
+
+#include "i2c_util.h"
+
+#define U8G_I2C_OPT_FAST 16  // from u8g.h
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+void configure_i2c(const uint8_t clock_option) {
+  /**
+   * Init I2C pin connect
+   */
+  PINSEL_CFG_Type PinCfg;
+  PinCfg.OpenDrain = 0;
+  PinCfg.Pinmode = 0;
+  PinCfg.Portnum = 0;
+  #if I2C_MASTER_ID == 0
+    PinCfg.Funcnum = 1;
+    PinCfg.Pinnum = 27;     // SDA0 / D57  AUX-1 ... SCL0 / D58  AUX-1
+  #elif I2C_MASTER_ID == 1
+    PinCfg.Funcnum = 3;
+    PinCfg.Pinnum = 0;      // SDA1 / D20 SCA ... SCL1 / D21 SCL
+  #elif I2C_MASTER_ID == 2
+    PinCfg.Funcnum = 2;
+    PinCfg.Pinnum = 10;     // SDA2 / D38  X_ENABLE_PIN ... SCL2 / D55  X_DIR_PIN
+  #endif
+  PINSEL_ConfigPin(&PinCfg);
+  PinCfg.Pinnum += 1;
+  PINSEL_ConfigPin(&PinCfg);
+
+  // Initialize I2C peripheral
+  I2C_Init(I2CDEV_M, (clock_option & U8G_I2C_OPT_FAST) ? 400000: 100000);  // LCD data rates
+
+  // Enable Master I2C operation
+  I2C_Cmd(I2CDEV_M, I2C_MASTER_MODE, ENABLE);
+}
+
+#ifdef __cplusplus
+  }
+#endif
+
+#endif // TARGET_LPC1768
diff --git a/Marlin/src/HAL/LPC1768/include/i2c_util.h b/Marlin/src/HAL/LPC1768/include/i2c_util.h
new file mode 100644
index 0000000..a57f68a
--- /dev/null
+++ b/Marlin/src/HAL/LPC1768/include/i2c_util.h
@@ -0,0 +1,56 @@
+/**
+ * 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 <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * HAL_LPC1768/include/i2c_util.h
+ */
+
+#include "../../../inc/MarlinConfigPre.h"
+
+#ifndef I2C_MASTER_ID
+  #define I2C_MASTER_ID 1
+#endif
+
+#if I2C_MASTER_ID == 0
+  #define I2CDEV_M LPC_I2C0
+#elif I2C_MASTER_ID == 1
+  #define I2CDEV_M LPC_I2C1
+#elif I2C_MASTER_ID == 2
+  #define I2CDEV_M LPC_I2C2
+#else
+  #error "Master I2C device not defined!"
+#endif
+
+#include <lpc17xx_i2c.h>
+#include <lpc17xx_pinsel.h>
+#include <lpc17xx_libcfg_default.h>
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+
+void configure_i2c(const uint8_t clock_option);
+
+#ifdef __cplusplus
+  }
+#endif