96e863f0f3
This can be very useful for some purposes:
* It makes it possible to disable the UART in cases where it is not
needed or needs to be disabled to conserve power.
* It makes it possible to disable the serial output to reduce code
size, which may be important for some chips. Sometimes, a few kB can
be saved this way.
* It makes it possible to override the default, for example you might
want to use an actual UART to debug the USB-CDC implementation.
It also lowers the dependency on having machine.Serial defined, which is
often not defined when targeting a chip. Eventually, we might want to
make it possible to write `-target=nrf52` or `-target=atmega328p` for
example to target the chip itself with no board specific assumptions.
The defaults don't change. I checked this by running `make smoketest`
before and after and comparing the results.
65 строки
917 Б
Go
65 строки
917 Б
Go
// +build pca10056
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package machine
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const HasLowFrequencyCrystal = true
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// LEDs on the pca10056
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const (
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LED Pin = LED1
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LED1 Pin = 13
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LED2 Pin = 14
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LED3 Pin = 15
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LED4 Pin = 16
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)
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// Buttons on the pca10056
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const (
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BUTTON Pin = BUTTON1
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BUTTON1 Pin = 11
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BUTTON2 Pin = 12
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BUTTON3 Pin = 24
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BUTTON4 Pin = 25
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)
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var DefaultUART = UART0
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// UART pins
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const (
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UART_TX_PIN Pin = 6
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UART_RX_PIN Pin = 8
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)
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// ADC pins
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const (
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ADC0 Pin = 3
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ADC1 Pin = 4
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ADC2 Pin = 28
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ADC3 Pin = 29
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ADC4 Pin = 30
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ADC5 Pin = 31
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)
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// I2C pins
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const (
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SDA_PIN Pin = 26 // P0.26
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SCL_PIN Pin = 27 // P0.27
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)
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// SPI pins
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const (
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SPI0_SCK_PIN Pin = 47 // P1.15
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SPI0_SDO_PIN Pin = 45 // P1.13
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SPI0_SDI_PIN Pin = 46 // P1.14
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)
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// USB CDC identifiers
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const (
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usb_STRING_PRODUCT = "Nordic nRF52840DK (PCA10056)"
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usb_STRING_MANUFACTURER = "Nordic Semiconductor"
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)
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var (
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usb_VID uint16 = 0x239A
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usb_PID uint16 = 0x8029
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)
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