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// +build nrf51
package machine
import (
"device/nrf"
)
const CPU_FREQUENCY = 16000000
// Get peripheral and pin number for this GPIO pin.
func (p GPIO) getPortPin() (*nrf.GPIO_Type, uint8) {
return nrf.GPIO, p.Pin
}
func (uart UART) setPins(tx, rx uint32) {
nrf.UART0.PSELTXD = nrf.RegValue(tx)
nrf.UART0.PSELRXD = nrf.RegValue(rx)
}
//go:export UART0_IRQHandler
func handleUART0() {
UART0.handleInterrupt()
}
func (i2c I2C) setPins(scl, sda uint8) {
i2c.Bus.PSELSCL = nrf.RegValue(scl)
i2c.Bus.PSELSDA = nrf.RegValue(sda)
}
// SPI
func (spi SPI) setPins(sck, mosi, miso uint8) {
if sck == 0 {
sck = SPI0_SCK_PIN
}
if mosi == 0 {
mosi = SPI0_MOSI_PIN
}
if miso == 0 {
miso = SPI0_MISO_PIN
}
spi.Bus.PSELSCK = nrf.RegValue(sck)
spi.Bus.PSELMOSI = nrf.RegValue(mosi)
spi.Bus.PSELMISO = nrf.RegValue(miso)
}
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