Initial commit

1 files changed, 170 insertions, 0 deletions

diff --git a/Marlin/src/HAL/TEENSY40_41/HAL.cpp b/Marlin/src/HAL/TEENSY40_41/HAL.cpp
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+++ b/Marlin/src/HAL/TEENSY40_41/HAL.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/>.
+ *
+ */
+
+/**
+ * HAL for Teensy 4.0 / 4.1 (IMXRT1062)
+ */
+
+#ifdef __IMXRT1062__
+
+#include "HAL.h"
+#include "../shared/Delay.h"
+#include "timers.h"
+
+#include <Wire.h>
+
+DefaultSerial MSerial(false);
+USBSerialType USBSerial(false, SerialUSB);
+
+uint16_t HAL_adc_result, HAL_adc_select;
+
+static const uint8_t pin2sc1a[] = {
+  0x07,  // 0/A0  AD_B1_02
+  0x08,  // 1/A1  AD_B1_03
+  0x0C,  // 2/A2  AD_B1_07
+  0x0B,  // 3/A3  AD_B1_06
+  0x06,  // 4/A4  AD_B1_01
+  0x05,  // 5/A5  AD_B1_00
+  0x0F,  // 6/A6  AD_B1_10
+  0x00,  // 7/A7  AD_B1_11
+  0x0D,  // 8/A8  AD_B1_08
+  0x0E,  // 9/A9  AD_B1_09
+  0x01,  // 24/A10 AD_B0_12
+  0x02,  // 25/A11 AD_B0_13
+  0x83,  // 26/A12 AD_B1_14 - only on ADC2, 3
+  0x84,  // 27/A13 AD_B1_15 - only on ADC2, 4
+  0x07,  // 14/A0  AD_B1_02
+  0x08,  // 15/A1  AD_B1_03
+  0x0C,  // 16/A2  AD_B1_07
+  0x0B,  // 17/A3  AD_B1_06
+  0x06,  // 18/A4  AD_B1_01
+  0x05,  // 19/A5  AD_B1_00
+  0x0F,  // 20/A6  AD_B1_10
+  0x00,  // 21/A7  AD_B1_11
+  0x0D,  // 22/A8  AD_B1_08
+  0x0E,  // 23/A9  AD_B1_09
+  0x01,  // 24/A10 AD_B0_12
+  0x02,  // 25/A11 AD_B0_13
+  0x83,  // 26/A12 AD_B1_14 - only on ADC2, 3
+  0x84,  // 27/A13 AD_B1_15 - only on ADC2, 4
+  #ifdef ARDUINO_TEENSY41
+    0xFF,  // 28
+    0xFF,  // 29
+    0xFF,  // 30
+    0xFF,  // 31
+    0xFF,  // 32
+    0xFF,  // 33
+    0xFF,  // 34
+    0xFF,  // 35
+    0xFF,  // 36
+    0xFF,  // 37
+    0x81,  // 38/A14 AD_B1_12 - only on ADC2, 1
+    0x82,  // 39/A15 AD_B1_13 - only on ADC2, 2
+    0x09,  // 40/A16 AD_B1_04
+    0x0A,  // 41/A17 AD_B1_05
+  #endif
+};
+
+/*
+// disable interrupts
+void cli() { noInterrupts(); }
+
+// enable interrupts
+void sei() { interrupts(); }
+*/
+
+void HAL_adc_init() {
+  analog_init();
+  while (ADC1_GC & ADC_GC_CAL) ;
+  while (ADC2_GC & ADC_GC_CAL) ;
+}
+
+void HAL_clear_reset_source() {
+  uint32_t reset_source = SRC_SRSR;
+  SRC_SRSR = reset_source;
+ }
+
+uint8_t HAL_get_reset_source() {
+  switch (SRC_SRSR & 0xFF) {
+    case 1: return RST_POWER_ON; break;
+    case 2: return RST_SOFTWARE; break;
+    case 4: return RST_EXTERNAL; break;
+    // case 8: return RST_BROWN_OUT; break;
+    case 16: return RST_WATCHDOG; break;
+     case 64: return RST_JTAG; break;
+    // case 128: return RST_OVERTEMP; break;
+  }
+  return 0;
+}
+
+#define __bss_end _ebss
+
+extern "C" {
+  extern char __bss_end;
+  extern char __heap_start;
+  extern void* __brkval;
+
+  // Doesn't work on Teensy 4.x
+  uint32_t freeMemory() {
+    uint32_t free_memory;
+    if ((uint32_t)__brkval == 0)
+      free_memory = ((uint32_t)&free_memory) - ((uint32_t)&__bss_end);
+    else
+      free_memory = ((uint32_t)&free_memory) - ((uint32_t)__brkval);
+    return free_memory;
+  }
+}
+
+void HAL_adc_start_conversion(const uint8_t adc_pin) {
+  const uint16_t pin = pin2sc1a[adc_pin];
+  if (pin == 0xFF) {
+    HAL_adc_select = -1; // Digital only
+  }
+  else if (pin & 0x80) {
+    HAL_adc_select = 1;
+    ADC2_HC0 = pin & 0x7F;
+  }
+  else {
+    HAL_adc_select = 0;
+    ADC1_HC0 = pin;
+  }
+}
+
+uint16_t HAL_adc_get_result() {
+  switch (HAL_adc_select) {
+    case 0:
+      while (!(ADC1_HS & ADC_HS_COCO0)) ; // wait
+      return ADC1_R0;
+    case 1:
+      while (!(ADC2_HS & ADC_HS_COCO0)) ; // wait
+      return ADC2_R0;
+  }
+  return 0;
+}
+
+bool is_output(uint8_t pin) {
+  const struct digital_pin_bitband_and_config_table_struct *p;
+  p = digital_pin_to_info_PGM + pin;
+  return (*(p->reg + 1) & p->mask);
+}
+
+#endif // __IMXRT1062__