Richard Cullen / Mbed 2 deprecated Hybrid_Supercapacitor_Car_Battery_Monitoring

This is the code used on my video series "Hybrid Supercapacitor Car Battery" for my own hardware monitoring system. THe videos can be found on madelectronengineering.com

Dependencies:   BurstSPI Fonts INA219 mbed LPC1114_WakeInterruptIn

Fork of SharpMemoryLCD by Paul Staron

Device/WakeUp_LPC11u24.cpp@2:0c49a8f32f6e, 2017-12-26 (annotated)

Committer:
madelectroneng
Date:
Tue Dec 26 21:30:09 2017 +0000
Revision:
2:0c49a8f32f6e
Inital setup

Who changed what in which revision?

UserRevisionLine numberNew contents of line
madelectroneng 2:0c49a8f32f6e 1 /**
madelectroneng 2:0c49a8f32f6e 2 Due to lack of another option for the LPC11u24 the watchdog timer is used as wakeup source.
madelectroneng 2:0c49a8f32f6e 3 Since if the reset on watchdog event bit is set, I cannot remove it again, this means if you also got watchdog code running
madelectroneng 2:0c49a8f32f6e 4 the most likely result is that it just resets your board.
madelectroneng 2:0c49a8f32f6e 5 **/
madelectroneng 2:0c49a8f32f6e 6
madelectroneng 2:0c49a8f32f6e 7
madelectroneng 2:0c49a8f32f6e 8 #ifdef TARGET_LPC11U24
madelectroneng 2:0c49a8f32f6e 9
madelectroneng 2:0c49a8f32f6e 10 #include "WakeUp.h"
madelectroneng 2:0c49a8f32f6e 11
madelectroneng 2:0c49a8f32f6e 12 Callback<void()> WakeUp::callback;
madelectroneng 2:0c49a8f32f6e 13 float WakeUp::cycles_per_ms = 5.0;
madelectroneng 2:0c49a8f32f6e 14
madelectroneng 2:0c49a8f32f6e 15 void WakeUp::set_ms(uint32_t ms)
madelectroneng 2:0c49a8f32f6e 16 {
madelectroneng 2:0c49a8f32f6e 17 if (ms != 0) {
madelectroneng 2:0c49a8f32f6e 18 LPC_SYSCON->SYSAHBCLKCTRL |= 0x8000;
madelectroneng 2:0c49a8f32f6e 19 LPC_SYSCON->PDRUNCFG &= ~(1<<6);
madelectroneng 2:0c49a8f32f6e 20 LPC_SYSCON->PDSLEEPCFG &= ~(1<<6);
madelectroneng 2:0c49a8f32f6e 21 LPC_SYSCON->STARTERP1 |= 1<<12;
madelectroneng 2:0c49a8f32f6e 22
madelectroneng 2:0c49a8f32f6e 23 //Set oscillator for 20kHz = 5kHz after divide by 4 in WDT
madelectroneng 2:0c49a8f32f6e 24 LPC_SYSCON->WDTOSCCTRL = 14 | (1<<5);
madelectroneng 2:0c49a8f32f6e 25
madelectroneng 2:0c49a8f32f6e 26 LPC_WWDT->MOD = 1; //Enable WDT
madelectroneng 2:0c49a8f32f6e 27 LPC_WWDT->TC = (uint32_t)((float)ms * cycles_per_ms);
madelectroneng 2:0c49a8f32f6e 28 LPC_WWDT->CLKSEL = 1; //WDTOSC
madelectroneng 2:0c49a8f32f6e 29 LPC_WWDT->WARNINT = 0;
madelectroneng 2:0c49a8f32f6e 30
madelectroneng 2:0c49a8f32f6e 31 NVIC_SetVector(WDT_IRQn, (uint32_t)WakeUp::irq_handler);
madelectroneng 2:0c49a8f32f6e 32
madelectroneng 2:0c49a8f32f6e 33 //Feeeeeed me
madelectroneng 2:0c49a8f32f6e 34 LPC_WWDT->FEED = 0xAA;
madelectroneng 2:0c49a8f32f6e 35 LPC_WWDT->FEED = 0x55;
madelectroneng 2:0c49a8f32f6e 36
madelectroneng 2:0c49a8f32f6e 37 NVIC_EnableIRQ(WDT_IRQn);
madelectroneng 2:0c49a8f32f6e 38 } else
madelectroneng 2:0c49a8f32f6e 39 NVIC_DisableIRQ(WDT_IRQn);
madelectroneng 2:0c49a8f32f6e 40
madelectroneng 2:0c49a8f32f6e 41 }
madelectroneng 2:0c49a8f32f6e 42
madelectroneng 2:0c49a8f32f6e 43 void WakeUp::irq_handler(void)
madelectroneng 2:0c49a8f32f6e 44 {
madelectroneng 2:0c49a8f32f6e 45 LPC_WWDT->MOD = 1<<3;
madelectroneng 2:0c49a8f32f6e 46 callback.call();
madelectroneng 2:0c49a8f32f6e 47 }
madelectroneng 2:0c49a8f32f6e 48
madelectroneng 2:0c49a8f32f6e 49 void WakeUp::calibrate(void)
madelectroneng 2:0c49a8f32f6e 50 {
madelectroneng 2:0c49a8f32f6e 51 cycles_per_ms = 5.0;
madelectroneng 2:0c49a8f32f6e 52 set_ms(1100);
madelectroneng 2:0c49a8f32f6e 53 wait_ms(10); //Give time to sync
madelectroneng 2:0c49a8f32f6e 54 uint32_t count1 = LPC_WWDT->TV;
madelectroneng 2:0c49a8f32f6e 55 wait_ms(100);
madelectroneng 2:0c49a8f32f6e 56 uint32_t count2 = LPC_WWDT->TV;
madelectroneng 2:0c49a8f32f6e 57 set_ms(0);
madelectroneng 2:0c49a8f32f6e 58 count1 = count1 - count2;
madelectroneng 2:0c49a8f32f6e 59
madelectroneng 2:0c49a8f32f6e 60 cycles_per_ms = count1 / 100.0;
madelectroneng 2:0c49a8f32f6e 61 }
madelectroneng 2:0c49a8f32f6e 62
madelectroneng 2:0c49a8f32f6e 63 #endif