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added adc readout for the battery voltage and shutdown

This commit is contained in:
schneider 2011-05-19 00:20:10 +02:00
parent 0b6fcc1354
commit 96d6cbd616
1 changed files with 32 additions and 10 deletions
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42
main.c
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@ -29,7 +29,9 @@ int main(void)
{ {
// Configure cpu and mandatory peripherals // Configure cpu and mandatory peripherals
systemInit(); systemInit();
//pmuInit();
//enable clocks to adc and watchdog
pmuInit();
uint32_t currentSecond, lastSecond; uint32_t currentSecond, lastSecond;
currentSecond = lastSecond = 0; currentSecond = lastSecond = 0;
@ -38,7 +40,7 @@ int main(void)
gpioSetDir(1, 9, 1); gpioSetDir(1, 9, 1);
gpioSetValue (1, 9, 0); gpioSetValue (1, 9, 0);
//backlight off //backlight on
gpioSetDir(1, 10, 1); gpioSetDir(1, 10, 1);
gpioSetValue (1, 10, 1); gpioSetValue (1, 10, 1);
@ -50,19 +52,21 @@ int main(void)
//pmuSleep(); //pmuSleep();
//pmuPowerDown(); //pmuPowerDown();
init(); // display init(); // display
/*
//Make PIO1_11 an analog input
gpioSetDir(CFG_LED_PORT, CFG_LED_PIN, 0); gpioSetDir(CFG_LED_PORT, CFG_LED_PIN, 0);
IOCON_PIO1_11 = 0x41; IOCON_PIO1_11 = 0x41;
adcInit(); adcInit();
*/
fill(255); fill(255);
display(0); display(0);
uint32_t j=0; uint32_t j=0;
// Set GPIO1.4 to input // Set GPIO3.3 to input
gpioSetDir(3, 3, gpioDirection_Input); gpioSetDir(3, 3, gpioDirection_Input);
// Disable the internal pullup/down resistor // Disable the internal pullup/down resistor
// gpioSetPullup(&IOCON_PIO3_3, gpioPullupMode_Inactive); // gpioSetPullup(&IOCON_PIO3_3, gpioPullupMode_Inactive);
//disable the JTAG on PIO3_3
IOCON_PIO3_3 = 0x10; IOCON_PIO3_3 = 0x10;
int yctr=0; int yctr=0;
@ -145,11 +149,29 @@ int main(void)
fontctr=0; fontctr=0;
}; };
/* uint32_t results = adcRead(7);
uint32_t results = adcRead(7); //dx=DoString(0,yctr+10,"LED:");
dx=DoString(0,yctr+9,"LED:"); //DoInt(dx,yctr+9,results);
DoInt(dx,yctr+9,results);
*/ results = adcRead(1);
dx=DoString(0,yctr+20,"Voltage:");
results *= 10560;
results /= 1024;
DoInt(dx,yctr+20,results);
if( results < 3500 ){
DoString(0,yctr+30,"Shutdown");
//external vcc off
gpioSetDir(1, 9, 0);
gpioSetValue (1, 9, 0);
//backlight off
gpioSetValue (1, 10, 0);
SCB_SCR |= SCB_SCR_SLEEPDEEP;
PMU_PMUCTRL = PMU_PMUCTRL_DPDEN_DEEPPOWERDOWN;
__asm volatile ("WFI");
}else{
DoString(0,yctr+30,"OK ");
}
/* /*
lastSecond = currentSecond; lastSecond = currentSecond;