S K UCI / Mbed 2 deprecated AutonomousDAQ

Arianna autonomous DAQ firmware

Dependencies:   mbed SDFileSystemFilinfo AriSnProtocol NetServicesMin AriSnComm MODSERIAL PowerControlClkPatch DS1820OW

Watchdog.h@0:664899e0b988, 2012-06-30 (annotated)

Committer:
uci1
Date:
Sat Jun 30 02:03:51 2012 +0000
Revision:
0:664899e0b988
Child:
12:d472f9811262
first version. SD card writing and data readout works. communications not tested.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uci1 0:664899e0b988 1 #ifndef MB_Watchdog
uci1 0:664899e0b988 2 #define MB_Watchdog
uci1 0:664899e0b988 3
uci1 0:664899e0b988 4 // Simon's Watchdog code from
uci1 0:664899e0b988 5 // http://mbed.org/forum/mbed/topic/508/
uci1 0:664899e0b988 6 namespace Watchdog {
uci1 0:664899e0b988 7
uci1 0:664899e0b988 8 // "kick" or "feed" the dog - reset the watchdog timer
uci1 0:664899e0b988 9 // by writing this required bit pattern
uci1 0:664899e0b988 10 void kick() {
uci1 0:664899e0b988 11 LPC_WDT->WDFEED = 0xAA;
uci1 0:664899e0b988 12 LPC_WDT->WDFEED = 0x55;
uci1 0:664899e0b988 13 }
uci1 0:664899e0b988 14
uci1 0:664899e0b988 15 // Load timeout value in watchdog timer and enable
uci1 0:664899e0b988 16 void kick(const float s) {
uci1 0:664899e0b988 17 LPC_WDT->WDCLKSEL = 0x1; // Set CLK src to PCLK
uci1 0:664899e0b988 18 // WD has a fixed /4 prescaler, PCLK default is /4
uci1 0:664899e0b988 19 static const float clk = static_cast<float>(SystemCoreClock / 16);
uci1 0:664899e0b988 20 LPC_WDT->WDTC = s * clk;
uci1 0:664899e0b988 21 LPC_WDT->WDMOD = 0x3; // Enabled and Reset
uci1 0:664899e0b988 22 kick();
uci1 0:664899e0b988 23 }
uci1 0:664899e0b988 24
uci1 0:664899e0b988 25 };
uci1 0:664899e0b988 26
uci1 0:664899e0b988 27
uci1 0:664899e0b988 28 #endif // MB_Watchdog