Trinity Devboard PCB V1.0 Firmware. FreeRTOS is setup and the MCU reads IMU data over SPI fand Magnetometer data over I2C, each with a seperate task. Sensordata is then run though MadgwickAHRS and send over USB as serial packet data to use in trinity visualizer. Bare minimum functionality works and is replicated from the first prototype.

2026-09-13 19:51:03 +02:00
commit 7ee381de58
1630 changed files with 632404 additions and 0 deletions
@@ -0,0 +1,187 @@
+/**************************************************************************//**
+ * @file     os_tick_gtim.c
+ * @brief    CMSIS OS Tick implementation for Generic Timer
+ * @version  V1.0.1
+ * @date     24. November 2017
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017 ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "os_tick.h"
+#include "irq_ctrl.h"
+
+#include "RTE_Components.h"
+#include CMSIS_device_header
+
+#ifndef GTIM_IRQ_PRIORITY
+#define GTIM_IRQ_PRIORITY           0xFFU
+#endif
+
+#ifndef GTIM_IRQ_NUM
+#define GTIM_IRQ_NUM                SecurePhyTimer_IRQn
+#endif
+
+// Timer interrupt pending flag
+static uint8_t GTIM_PendIRQ;
+
+// Timer tick frequency
+static uint32_t GTIM_Clock;
+
+// Timer load value
+static uint32_t GTIM_Load;
+
+// Setup OS Tick.
+int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
+  uint32_t prio, bits;
+
+  if (freq == 0U) {
+    return (-1);
+  }
+
+  GTIM_PendIRQ = 0U;
+
+  // Get timer clock
+#ifdef SCTR_BASE
+  GTIM_Clock = *(uint32_t*)(SCTR_BASE+0x20);
+#else
+  // FVP REFCLK CNTControl 100MHz
+  GTIM_Clock = 100000000UL;
+#endif
+
+  PL1_SetCounterFrequency(GTIM_Clock);
+
+  // Calculate load value
+  GTIM_Load = (GTIM_Clock / freq) - 1U;
+
+  // Disable Generic Timer and set load value
+  PL1_SetControl(0U);
+  PL1_SetLoadValue(GTIM_Load);
+
+  // Disable corresponding IRQ
+  IRQ_Disable(GTIM_IRQ_NUM);
+  IRQ_ClearPending(GTIM_IRQ_NUM);
+
+  // Determine number of implemented priority bits
+  IRQ_SetPriority(GTIM_IRQ_NUM, 0xFFU);
+
+  prio = IRQ_GetPriority(GTIM_IRQ_NUM);
+
+  // At least bits [7:4] must be implemented
+  if ((prio & 0xF0U) == 0U) {
+    return (-1);
+  }
+
+  for (bits = 0; bits < 4; bits++) {
+    if ((prio & 0x01) != 0) {
+      break;
+    }
+    prio >>= 1;
+  }
+  
+  // Adjust configured priority to the number of implemented priority bits
+  prio = (GTIM_IRQ_PRIORITY << bits) & 0xFFUL;
+
+  // Set Private Timer interrupt priority
+  IRQ_SetPriority(GTIM_IRQ_NUM, prio-1U);
+
+  // Set edge-triggered IRQ
+  IRQ_SetMode(GTIM_IRQ_NUM, IRQ_MODE_TRIG_EDGE);
+
+  // Register tick interrupt handler function
+  IRQ_SetHandler(GTIM_IRQ_NUM, handler);
+
+  // Enable corresponding interrupt
+  IRQ_Enable(GTIM_IRQ_NUM);
+
+  // Enable system counter and timer control
+#ifdef SCTR_BASE
+  *(uint32_t*)SCTR_BASE |= 3U;
+#endif
+
+  // Enable timer control
+  PL1_SetControl(1U);
+
+  return (0);
+}
+
+/// Enable OS Tick.
+void OS_Tick_Enable (void) {
+  uint32_t ctrl;
+
+  // Set pending interrupt if flag set
+  if (GTIM_PendIRQ != 0U) {
+    GTIM_PendIRQ = 0U;
+    IRQ_SetPending (GTIM_IRQ_NUM);
+  }
+
+  // Start the Private Timer
+  ctrl = PL1_GetControl();
+  // Set bit: Timer enable
+  ctrl |= 1U;
+  PL1_SetControl(ctrl);
+}
+
+/// Disable OS Tick.
+void OS_Tick_Disable (void) {
+  uint32_t ctrl;
+
+  // Stop the Private Timer
+  ctrl = PL1_GetControl();
+  // Clear bit: Timer enable
+  ctrl &= ~1U;
+  PL1_SetControl(ctrl);
+
+  // Remember pending interrupt flag
+  if (IRQ_GetPending(GTIM_IRQ_NUM) != 0) {
+    IRQ_ClearPending(GTIM_IRQ_NUM);
+    GTIM_PendIRQ = 1U;
+  }
+}
+
+// Acknowledge OS Tick IRQ.
+void OS_Tick_AcknowledgeIRQ (void) {
+  IRQ_ClearPending (GTIM_IRQ_NUM);
+  PL1_SetLoadValue(GTIM_Load);
+}
+
+// Get OS Tick IRQ number.
+int32_t  OS_Tick_GetIRQn (void) {
+  return (GTIM_IRQ_NUM);
+}
+
+// Get OS Tick clock.
+uint32_t OS_Tick_GetClock (void) {
+  return (GTIM_Clock);
+}
+
+// Get OS Tick interval.
+uint32_t OS_Tick_GetInterval (void) {
+  return (GTIM_Load + 1U);
+}
+
+// Get OS Tick count value.
+uint32_t OS_Tick_GetCount (void) {
+  return (GTIM_Load - PL1_GetCurrentValue());
+}
+
+// Get OS Tick overflow status.
+uint32_t OS_Tick_GetOverflow (void) {
+  CNTP_CTL_Type cntp_ctl;
+  cntp_ctl.w = PL1_GetControl();
+  return (cntp_ctl.b.ISTATUS);
+}