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László Monda
2018-08-05 22:28:30 +02:00
parent 7d011237f8
commit 5572952dc8
1 changed files with 9 additions and 10 deletions
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19
left/src/i2c_watchdog.c
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@@ -5,31 +5,30 @@
#include "init_peripherals.h" #include "init_peripherals.h"
#include "config.h" #include "config.h"
/* NOTE: Because of a bug in the ROM bootloader of the KL03Z, the watchdog timer is disabled and cannot be re-enabled. // NOTE: Because of a bug in the ROM bootloader of the KL03Z, the watchdog timer is disabled and cannot be re-enabled.
* See https://community.nxp.com/thread/457893 // See https://community.nxp.com/thread/457893
* Therefore the hardware watchdog timer cannot be used without an extra way to enter bootloader or application mode. // Therefore the hardware watchdog timer cannot be used without an extra way to enter bootloader or application mode.
*/ static uint32_t prevWatchdogCounter = 0;
static uint32_t prevWatchdogCounter = 0; static uint32_t I2cWatchdog_RecoveryCounter; // Counter for how many times we had to recover and restart
static uint32_t I2cWatchdog_RecoveryCounter; /* counter for how many times we had to recover and restart */
void RunWatchdog(void) void RunWatchdog(void)
{ {
static volatile uint32_t I2cWatchdog_WatchCounter = 0; /* counter for timer */ static volatile uint32_t I2cWatchdog_WatchCounter = 0; // Counter for timer
static int cntr = 0; static int cntr = 0;
cntr++; cntr++;
if (cntr==100) { /* we get called from KEY_SCANNER_HANDLER() which runs at 1ms, thus scaling down by 100 here to get 100 ms period */ if (cntr==100) { // We get called from KEY_SCANNER_HANDLER() which runs at 1ms, thus scaling down by 100 here to get 100 ms period
cntr=0; cntr=0;
TestLed_Toggle(); TestLed_Toggle();
I2cWatchdog_WatchCounter++; I2cWatchdog_WatchCounter++;
if (I2cWatchdog_WatchCounter>10) { /* do not check within the first 1000 ms, as I2C might not be running yet */ if (I2cWatchdog_WatchCounter>10) { // Do not check within the first 1000 ms, as I2C might not be running yet
if (I2C_Watchdog == prevWatchdogCounter) { // Restart I2C if there hasn't been any interrupt during 100 ms. I2C_Watchdog gets incremented for every I2C transaction if (I2C_Watchdog == prevWatchdogCounter) { // Restart I2C if there hasn't been any interrupt during 100 ms. I2C_Watchdog gets incremented for every I2C transaction
I2cWatchdog_RecoveryCounter++; I2cWatchdog_RecoveryCounter++;
I2C_SlaveDeinit(I2C_BUS_BASEADDR); I2C_SlaveDeinit(I2C_BUS_BASEADDR);
initI2c(); initI2c();
} }
} }
prevWatchdogCounter = I2C_Watchdog; /* remember previous counter */ prevWatchdogCounter = I2C_Watchdog;
} }
} }