Completed Onboarding Challenge

Testing/Temporary/CTestCostData.txt

@@ -0,0 +1 @@
+---

Testing/Temporary/LastTest.log

@@ -0,0 +1,3 @@
+Start testing: Dec 18 23:32 EST
+----------------------------------------------------------
+End testing: Dec 18 23:32 EST

lm75bd/lm75bd.c

@@ -26,8 +26,22 @@ error_code_t lm75bdInit(lm75bd_config_t *config) {
 }
 
 error_code_t readTempLM75BD(uint8_t devAddr, float *temp) {
-  /* Implement this driver function */
+  // declare error code variable
+  error_code_t errCode;
 
+  // set pointer register to 'temperature sensor'
+  uint8_t writeBuf[1] = {0};
+  RETURN_IF_ERROR_CODE(i2cSendTo(devAddr, writeBuf, 1));
+
+  // read temperature from sensor
+  uint8_t readBuf[2] = {0};
+  RETURN_IF_ERROR_CODE(i2cReceiveFrom(devAddr, readBuf, 2));
+
+  // convert temperature reading to celsius
+  int16_t tempC = (readBuf[0] << 8) | readBuf[1];
+  tempC >>= 5;
+  *temp = tempC * 0.125;
+
   return ERR_CODE_SUCCESS;
 }
 

lm75bd/lm75bd.h

@@ -5,7 +5,7 @@
 #include <stdint.h>
 
 /* LM75BD I2C Device Address */
-#define LM75BD_OBC_I2C_ADDR /* Define the address here */
+#define LM75BD_OBC_I2C_ADDR 0x4F
 
 /* LM75BD Configuration Values */
 #define LM75BD_DEV_OP_MODE_NORMAL 0x00U

services/thermal_mgr/thermal_mgr.c

@@ -2,7 +2,7 @@
 #include "errors.h"
 #include "lm75bd.h"
 #include "console.h"
-
+#include "logging.h"
 #include <FreeRTOS.h>
 #include <os_task.h>
 #include <os_queue.h>
@@ -42,19 +42,50 @@ void initThermalSystemManager(lm75bd_config_t *config) {
 }
 
 error_code_t thermalMgrSendEvent(thermal_mgr_event_t *event) {
-  /* Send an event to the thermal manager queue */
-
+  if (&thermalMgrQueueHandle == NULL)
+    return ERR_CODE_INVALID_STATE;
+
+  if (event == NULL)
+    return ERR_CODE_INVALID_ARG;
+
+  if (xQueueSend(thermalMgrQueueHandle, (void *) event, (TickType_t) 0) != pdPASS)
+    return ERR_CODE_QUEUE_FULL;
+
   return ERR_CODE_SUCCESS;
 }
 
 void osHandlerLM75BD(void) {
-  /* Implement this function */
+  thermal_mgr_event_t event;
+  event.type = THERMAL_MGR_EVENT_INTERRUPT_CMD;
+  thermalMgrSendEvent(&event);
 }
 
 static void thermalMgr(void *pvParameters) {
-  /* Implement this task */
   while (1) {
-
+    thermal_mgr_event_t eventBuf;
+
+    float temp;
+
+    if (xQueueReceive(thermalMgrQueueHandle, &eventBuf, 10) == pdPASS) {
+      if (eventBuf.type == THERMAL_MGR_EVENT_MEASURE_TEMP_CMD) {
+        error_code_t errCode = readTempLM75BD(LM75BD_OBC_I2C_ADDR, &temp);
+        if (errCode == ERR_CODE_SUCCESS)
+          addTemperatureTelemetry(temp);
+        else
+          LOG_ERROR_CODE(errCode);
+      }
+      else if (eventBuf.type == THERMAL_MGR_EVENT_INTERRUPT_CMD) {
+        error_code_t errCode = readTempLM75BD(LM75BD_OBC_I2C_ADDR, &temp);
+        if (errCode == ERR_CODE_SUCCESS) {
+          if (temp > 75)
+            overTemperatureDetected();
+          else
+            safeOperatingConditions();
+        }
+        else
+          LOG_ERROR_CODE(errCode);
+      }
+    }
   }
 }
 

services/thermal_mgr/thermal_mgr.h

@@ -5,7 +5,7 @@
 
 typedef enum {
   THERMAL_MGR_EVENT_MEASURE_TEMP_CMD,
-
+  THERMAL_MGR_EVENT_INTERRUPT_CMD,
 } thermal_mgr_event_type_t;
 
 typedef struct {