mhu/reflow-oven-control-sw
2
0
Fork 0
Code Issues 4 Pull Requests Releases 4 Wiki Activity

Shorten wtchdog trigger interval to 1.25 seconds nominal. This will ensure the internal watchdog triggers before the external one

Browse Source
This commit is contained in:
Mario Hüttel
2023-06-09 00:04:32 +02:00
parent df593e2ab2
commit 1300fe88a4
4 changed files with 40 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
stm-firmware/include/reflow-controller/safety/safety-config.h
View File

@@ -126,7 +126,15 @@ enum analog_value_monitor {
#define WATCHDOG_HALT_DEBUG (0)
#endif
#define WATCHDOG_PRESCALER 16
/**
* @brief Watchdog clock prescaler value
*/
#define WATCHDOG_PRESCALER (16)
/**
* @brief Watchdog reload value
*/
#define WATCHDOG_RELOAD_VALUE (2500)
/**
* @brief Minimum number of bytes that have to be free on the stack. If this is not the case, an error is detected

12
stm-firmware/include/reflow-controller/safety/watchdog.h
View File

@@ -27,11 +27,19 @@
/**
* @brief Setup the watchdog for the safety controller
* @param Prescaler to use for the 32 KHz LSI clock
*
* The watchdog timeout can be calculated with:
* \f[ t = \frac{(\mathrm{RELOAD_VAL} + 1)\cdot \mathrm{PRESCALER}}{32000 } s\f]
*
* Valid prescaler values are: 4, 8, 16, 32, 64, 128, 256.
* @param prescaler Prescaler to use for the 32 KHz LSI clock
* @param reload_value Reload value to reload the timer with when reset. 0 to 0xFFF
* @return 0 if successful
* @return -1 if prescaler is wrong
* @return -2 if a reload value > 0xFFF is selected. 0xFFF will be used in this case
* @note Once the watchdog is enabled, it cannot be turned off!
*/
int watchdog_setup(uint8_t prescaler);
int watchdog_setup(uint16_t prescaler, uint16_t reload_value);
/**
* @brief Reset watchdog counter