Implement I2C watchdog for the left half. Disable the watchdog because it causes a hard fault. Don't update the test LED inside of SlaveCommand_SetTestLed due to testing purposes until the watchdog issue gets resolved.

2017-09-21 23:40:49 +02:00
parent e7330f5d61
commit 8924c36cb3
9 changed files with 81 additions and 6 deletions
@@ -0,0 +1,36 @@
+#include "fsl_i2c.h"
+#include "i2c.h"
+#include "i2c_watchdog.h"
+#include "test_led.h"
+#include "init_peripherals.h"
+
+static uint32_t prevWatchdogCounter = 0;
+uint32_t I2C_WatchdogInnerCounter;
+volatile uint32_t I2C_WatchdogOuterCounter;
+
+void InitI2cWatchdog(void)
+{
+    lptmr_config_t lptmrConfig;
+    LPTMR_GetDefaultConfig(&lptmrConfig);
+    LPTMR_Init(LPTMR0, &lptmrConfig);
+    LPTMR_SetTimerPeriod(LPTMR0, USEC_TO_COUNT(LPTMR_USEC_COUNT, LPTMR_SOURCE_CLOCK));
+    LPTMR_EnableInterrupts(LPTMR0, kLPTMR_TimerInterruptEnable);
+    EnableIRQ(LPTMR0_IRQn);
+    LPTMR_StartTimer(LPTMR0);
+}
+
+void I2C_WATCHDOG_LPTMR_HANDLER(void)
+{
+    I2C_WatchdogOuterCounter++;
+    TEST_LED_TOGGLE();
+
+    if (I2C_Watchdog == prevWatchdogCounter && I2C_WatchdogOuterCounter>10) { // Restart I2C if there hasn't been any interrupt during 100 ms
+        I2C_WatchdogInnerCounter++;
+        I2C_SlaveDeinit(I2C_BUS_BASEADDR);
+        //InitI2c();
+    }
+
+    prevWatchdogCounter = I2C_Watchdog;
+
+    LPTMR_ClearStatusFlags(LPTMR0, kLPTMR_TimerCompareFlag);
+}