Initial commit

1 files changed, 161 insertions, 0 deletions

diff --git a/Marlin/src/HAL/LPC1768/main.cpp b/Marlin/src/HAL/LPC1768/main.cpp
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+++ b/Marlin/src/HAL/LPC1768/main.cpp
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+/**
+ * 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/>.
+ *
+ */
+#ifdef TARGET_LPC1768
+
+#include <usb/usb.h>
+#include <usb/usbcfg.h>
+#include <usb/usbhw.h>
+#include <usb/usbcore.h>
+#include <usb/cdc.h>
+#include <usb/cdcuser.h>
+#include <usb/mscuser.h>
+#include <CDCSerial.h>
+#include <usb/mscuser.h>
+
+#include "../../inc/MarlinConfig.h"
+#include "../../core/millis_t.h"
+
+#include "../../sd/cardreader.h"
+
+extern uint32_t MSC_SD_Init(uint8_t pdrv);
+
+extern "C" {
+  #include <debug_frmwrk.h>
+  extern "C" int isLPC1769();
+  extern "C" void disk_timerproc();
+}
+
+void SysTick_Callback() { disk_timerproc(); }
+
+void HAL_init() {
+
+  // Init LEDs
+  #if PIN_EXISTS(LED)
+    SET_DIR_OUTPUT(LED_PIN);
+    WRITE_PIN_CLR(LED_PIN);
+    #if PIN_EXISTS(LED2)
+      SET_DIR_OUTPUT(LED2_PIN);
+      WRITE_PIN_CLR(LED2_PIN);
+      #if PIN_EXISTS(LED3)
+        SET_DIR_OUTPUT(LED3_PIN);
+        WRITE_PIN_CLR(LED3_PIN);
+        #if PIN_EXISTS(LED4)
+          SET_DIR_OUTPUT(LED4_PIN);
+          WRITE_PIN_CLR(LED4_PIN);
+        #endif
+      #endif
+    #endif
+
+    // Flash status LED 3 times to indicate Marlin has started booting
+    LOOP_L_N(i, 6) {
+      TOGGLE(LED_PIN);
+      delay(100);
+    }
+  #endif
+
+  // Init Servo Pins
+  #define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
+  #if HAS_SERVO_0
+    INIT_SERVO(0);
+  #endif
+  #if HAS_SERVO_1
+    INIT_SERVO(1);
+  #endif
+  #if HAS_SERVO_2
+    INIT_SERVO(2);
+  #endif
+  #if HAS_SERVO_3
+    INIT_SERVO(3);
+  #endif
+
+  //debug_frmwrk_init();
+  //_DBG("\n\nDebug running\n");
+  // Initialize the SD card chip select pins as soon as possible
+  #if PIN_EXISTS(SD_SS)
+    OUT_WRITE(SD_SS_PIN, HIGH);
+  #endif
+
+  #if PIN_EXISTS(ONBOARD_SD_CS) && ONBOARD_SD_CS_PIN != SD_SS_PIN
+    OUT_WRITE(ONBOARD_SD_CS_PIN, HIGH);
+  #endif
+
+  #ifdef LPC1768_ENABLE_CLKOUT_12M
+   /**
+    * CLKOUTCFG register
+    * bit 8 (CLKOUT_EN) = enables CLKOUT signal. Disabled for now to prevent glitch when enabling GPIO.
+    * bits 7:4 (CLKOUTDIV) = set to 0 for divider setting of /1
+    * bits 3:0 (CLKOUTSEL) = set to 1 to select main crystal oscillator as CLKOUT source
+    */
+    LPC_SC->CLKOUTCFG = (0<<8)|(0<<4)|(1<<0);
+    // set P1.27 pin to function 01 (CLKOUT)
+    PINSEL_CFG_Type PinCfg;
+    PinCfg.Portnum = 1;
+    PinCfg.Pinnum = 27;
+    PinCfg.Funcnum = 1;    // function 01 (CLKOUT)
+    PinCfg.OpenDrain = 0;  // not open drain
+    PinCfg.Pinmode = 2;    // no pull-up/pull-down
+    PINSEL_ConfigPin(&PinCfg);
+    // now set CLKOUT_EN bit
+    LPC_SC->CLKOUTCFG |= (1<<8);
+  #endif
+
+  USB_Init();                               // USB Initialization
+  USB_Connect(FALSE);                       // USB clear connection
+  delay(1000);                              // Give OS time to notice
+  USB_Connect(TRUE);
+
+  #if HAS_SD_HOST_DRIVE
+    MSC_SD_Init(0);                         // Enable USB SD card access
+  #endif
+
+  const millis_t usb_timeout = millis() + 2000;
+  while (!USB_Configuration && PENDING(millis(), usb_timeout)) {
+    delay(50);
+    HAL_idletask();
+    #if PIN_EXISTS(LED)
+      TOGGLE(LED_PIN);     // Flash quickly during USB initialization
+    #endif
+  }
+
+  HAL_timer_init();
+}
+
+// HAL idle task
+void HAL_idletask() {
+  #if HAS_SHARED_MEDIA
+    // If Marlin is using the SD card we need to lock it to prevent access from
+    // a PC via USB.
+    // Other HALs use IS_SD_PRINTING() and IS_SD_FILE_OPEN() to check for access but
+    // this will not reliably detect delete operations. To be safe we will lock
+    // the disk if Marlin has it mounted. Unfortunately there is currently no way
+    // to unmount the disk from the LCD menu.
+    // if (IS_SD_PRINTING() || IS_SD_FILE_OPEN())
+    if (card.isMounted())
+      MSC_Aquire_Lock();
+    else
+      MSC_Release_Lock();
+  #endif
+  // Perform USB stack housekeeping
+  MSC_RunDeferredCommands();
+}
+
+#endif // TARGET_LPC1768