func main() {
setup.Performance(0)
periph.AHBClockEnable(periph.GPIOB)
periph.AHBReset(periph.GPIOB)
LED.SetMode(Blue, gpio.Out)
LED.SetMode(Green, gpio.Out)
vt := exce.NewTable(16)
vt[exce.NMI] = exce.VectorFor(defaultHandler)
vt[exce.HardFault] = exce.VectorFor(defaultHandler)
vt[exce.SysTick] = exce.VectorFor(sysTickHandler)
exce.UseTable(vt[:])
_, _, tenms := systick.Calib()
tenms *= 10 // stm32l1 returns value for 1 ms not for 10ms.
systick.SetReload(tenms * 100)
systick.SetFlags(systick.Enable | systick.TickInt)
// Sleep forever.
sleep.EnableSleepOnExit()
barrier.Sync() // not necessary on Cortex-M0,M3,M4
sleep.WFI()
// Execution should never reach there so the green LED
// should never light up.
LED.SetBit(Green)
}
func init() {
setup.Performance(0)
periph.AHBClockEnable(periph.GPIOB)
periph.AHBReset(periph.GPIOB)
LED.SetMode(Blue, gpio.Out)
LED.SetMode(Green, gpio.Out)
}
func init() {
setup.Performance(0)
periph.AHBClockEnable(periph.GPIOA | periph.GPIOB)
periph.AHBReset(periph.GPIOA | periph.GPIOB)
LED.SetMode(Green, gpio.Out)
LED.SetMode(Blue, gpio.Out)
// Setup external interrupt source: user button.
gpio.A.SetMode(0, gpio.In)
exti.L0.Connect(gpio.A)
exti.L0.RiseTrigEnable()
exti.L0.IntEnable()
irq.Ext0.UseHandler(buttonHandler)
irq.Ext0.Enable()
}