maixbit: init fpioa clock at reset

src/machine/machine_k210.go

@@ -44,10 +44,10 @@ var (
 
 func (fpioa FPIOA) Init() {
 	// Enable APB0 clock.
-	kendryte.SYSCTL.CLK_EN_CENT.Set(kendryte.SYSCTL_CLK_EN_CENT_APB0_CLK_EN)
+	kendryte.SYSCTL.CLK_EN_CENT.SetBits(kendryte.SYSCTL_CLK_EN_CENT_APB0_CLK_EN)
 
 	// Enable FPIOA peripheral.
-	kendryte.SYSCTL.CLK_EN_PERI.Set(kendryte.SYSCTL_CLK_EN_PERI_FPIOA_CLK_EN)
+	kendryte.SYSCTL.CLK_EN_PERI.SetBits(kendryte.SYSCTL_CLK_EN_PERI_FPIOA_CLK_EN)
 }
 
 type UART struct {

src/runtime/interrupt/interrupt_k210.go

@@ -2,13 +2,16 @@
 
 package interrupt
 
-import "device/kendryte"
+import (
+	"device/kendryte"
+	"device/riscv"
+)
 
 // Enable enables this interrupt. Right after calling this function, the
 // interrupt may be invoked if it was already pending.
 func (irq Interrupt) Enable() {
-	// TODO: Use current hartid
-	kendryte.PLIC.TARGET_ENABLES[0].ENABLE[irq.num/32].SetBits(1 << (uint(irq.num) % 32))
+	hartId := riscv.MHARTID.Get()
+	kendryte.PLIC.TARGET_ENABLES[hartId].ENABLE[irq.num/32].SetBits(1 << (uint(irq.num) % 32))
 }
 
 // SetPriority sets the interrupt priority for this interrupt. A higher priority

src/runtime/runtime_k210.go

@@ -100,7 +100,7 @@ func handleInterrupt() {
 // initPeripherals configures periperhals the way the runtime expects them.
 func initPeripherals() {
 
-	//machine.FPIOA0.Init()
+	machine.FPIOA0.Init()
 
 	machine.UART0.Configure(machine.UARTConfig{})
 }