Implement the I2C watchdog using PIT.

This commit is contained in:
László Monda
2017-02-25 17:48:37 +01:00
parent b453297570
commit 6cf27799a6
6 changed files with 61 additions and 21 deletions

View File

@@ -3,6 +3,7 @@
#include "test_led.h"
#include "reset_button.h"
#include "i2c.h"
#include "i2c_watchdog.h"
#include "led_driver.h"
#include "merge_sensor.h"
#include "led_pwm.h"
@@ -47,25 +48,6 @@ void InitI2c() {
I2C_MasterInit(I2C_EEPROM_BUS_BASEADDR, &masterConfig, sourceClock);
}
/* This function is designed to restart and reinstall the I2C handler
* when a disconnection of the left side makes the master I2C bus unresponsive */
volatile uint32_t temp, counter;
void restartI2C(void) {
uint32_t sourceClock;
i2c_master_config_t masterConfig;
temp = I2C_Watchdog; // We take the current value of I2C counter
for (counter=0; counter<10000000; counter++); // This can also be changed for 1 sec delay using PIT
if (I2C_Watchdog == temp) { // Restart I2C if there hasn't be any interrupt during 1 sec
I2C_MasterGetDefaultConfig(&masterConfig);
I2C_MasterDeinit(I2C_MAIN_BUS_BASEADDR);
sourceClock = CLOCK_GetFreq(I2C_MASTER_BUS_CLK_SRC);
I2C_MasterInit(I2C_MAIN_BUS_BASEADDR, &masterConfig, sourceClock);
InitBridgeProtocolScheduler();
}
}
void InitPeripherials(void)
{
InitResetButton();
@@ -77,4 +59,5 @@ void InitPeripherials(void)
InitTestLed(); // This function must not be called before LedPwm_Init() or else the UHK won't
// reenumerate over USB unless disconnecting it, waiting for at least 4 seconds
// and reconnecting it. This is the strangest thing ever!
InitI2cWatchdog();
}