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Ayke van Laethem
b67351babe
Previously, the machine.UART0 object had two meanings:
- it was the first UART on the chip
- it was the default output for println
These two meanings conflict, and resulted in workarounds like:
- Defining UART0 to refer to the USB-CDC interface (atsamd21,
atsamd51, nrf52840), even though that clearly isn't an UART.
- Defining NRF_UART0 to avoid a conflict with UART0 (which was
redefined as a USB-CDC interface).
- Defining aliases like UART0 = UART1, which refer to the same
hardware peripheral (stm32).
This commit changes this to use a new machine.Serial object for the
default serial port. It might refer to the first or second UART
depending on the board, or even to the USB-CDC interface. Also, UART0
now really refers to the first UART on the chip, no longer to a USB-CDC
interface.
The changes in the runtime package are all just search+replace. The
changes in the machine package are a mixture of search+replace and
manual modifications.
This commit does not affect binary size, in fact it doesn't affect the
resulting binary at all.
65 lines
953 B
Go
65 lines
953 B
Go
// +build pca10059
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package machine
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// The PCA10040 has a low-frequency (32kHz) crystal oscillator on board.
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const HasLowFrequencyCrystal = true
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// LEDs on the PCA10059 (nRF52840 dongle)
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const (
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LED Pin = LED1
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LED1 Pin = 6
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LED2 Pin = 8
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LED3 Pin = (1 << 5) | 9
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LED4 Pin = 12
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)
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// Buttons on the PCA10059 (nRF52840 dongle)
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const (
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BUTTON Pin = BUTTON1
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BUTTON1 Pin = (1 << 5) | 6
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)
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// ADC pins
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const (
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ADC1 Pin = 2
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ADC2 Pin = 4
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ADC3 Pin = 29
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ADC4 Pin = 31
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)
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// UART pins
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const (
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UART_TX_PIN Pin = NoPin
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UART_RX_PIN Pin = NoPin
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)
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// Serial is the USB device
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var (
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Serial = USB
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)
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// I2C pins (unused)
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const (
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SDA_PIN = NoPin
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SCL_PIN = NoPin
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)
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// SPI pins (unused)
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const (
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SPI0_SCK_PIN = NoPin
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SPI0_SDO_PIN = NoPin
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SPI0_SDI_PIN = NoPin
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)
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// USB CDC identifiers
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const (
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usb_STRING_PRODUCT = "nRF52840 Dongle"
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usb_STRING_MANUFACTURER = "Nordic Semiconductor ASA"
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)
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var (
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usb_VID uint16 = 0x1915
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usb_PID uint16 = 0xCAFE
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)
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