aa5b8d0df7
This means that machine.UART0, machine.UART1, etc are of type *machine.UART, not machine.UART. This makes them easier to pass around and avoids surprises when they are passed around by value while they should be passed around by reference. There is a small code size impact in some cases, but it is relatively minor.
90 строки
1,4 КиБ
Go
90 строки
1,4 КиБ
Go
// +build nrf52833
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package machine
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import (
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"device/nrf"
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)
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// Hardware pins
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const (
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P0_00 Pin = 0
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P0_01 Pin = 1
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P0_02 Pin = 2
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P0_03 Pin = 3
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P0_04 Pin = 4
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P0_05 Pin = 5
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P0_06 Pin = 6
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P0_07 Pin = 7
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P0_08 Pin = 8
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P0_09 Pin = 9
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P0_10 Pin = 10
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P0_11 Pin = 11
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P0_12 Pin = 12
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P0_13 Pin = 13
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P0_14 Pin = 14
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P0_15 Pin = 15
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P0_16 Pin = 16
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P0_17 Pin = 17
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P0_18 Pin = 18
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P0_19 Pin = 19
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P0_20 Pin = 20
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P0_21 Pin = 21
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P0_22 Pin = 22
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P0_23 Pin = 23
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P0_24 Pin = 24
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P0_25 Pin = 25
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P0_26 Pin = 26
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P0_27 Pin = 27
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P0_28 Pin = 28
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P0_29 Pin = 29
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P0_30 Pin = 30
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P0_31 Pin = 31
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P1_00 Pin = 32
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P1_01 Pin = 33
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P1_02 Pin = 34
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P1_03 Pin = 35
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P1_04 Pin = 36
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P1_05 Pin = 37
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P1_06 Pin = 38
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P1_07 Pin = 39
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P1_08 Pin = 40
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P1_09 Pin = 41
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P1_10 Pin = 42
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P1_11 Pin = 43
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P1_12 Pin = 44
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P1_13 Pin = 45
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P1_14 Pin = 46
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P1_15 Pin = 47
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)
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var (
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UART0 = NRF_UART0
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)
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// Get peripheral and pin number for this GPIO pin.
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func (p Pin) getPortPin() (*nrf.GPIO_Type, uint32) {
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if p >= 32 {
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return nrf.P1, uint32(p - 32)
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} else {
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return nrf.P0, uint32(p)
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}
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}
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func (uart *UART) setPins(tx, rx Pin) {
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nrf.UART0.PSEL.TXD.Set(uint32(tx))
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nrf.UART0.PSEL.RXD.Set(uint32(rx))
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}
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func (i2c *I2C) setPins(scl, sda Pin) {
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i2c.Bus.PSEL.SCL.Set(uint32(scl))
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i2c.Bus.PSEL.SDA.Set(uint32(sda))
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}
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// PWM
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var (
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PWM0 = &PWM{PWM: nrf.PWM0}
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PWM1 = &PWM{PWM: nrf.PWM1}
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PWM2 = &PWM{PWM: nrf.PWM2}
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PWM3 = &PWM{PWM: nrf.PWM3}
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)
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