cd628bcde6
This only works with a custom bossac build from Arduino, not with the upstream version. It avoids needing the manual "double tap" to enter bootloader mode before flashing firmware.
26 строки
696 Б
Go
26 строки
696 Б
Go
// +build nrf52840,nrf52840_reset_bossa
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package machine
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import (
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"device/arm"
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"device/nrf"
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)
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const DFU_MAGIC_SERIAL_ONLY_RESET = 0xb0
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// checkShouldReset is called by the USB-CDC implementation to check whether to
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// reset into the bootloader/OTA and if so, resets the chip appropriately.
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func checkShouldReset() {
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if usbLineInfo.dwDTERate == 1200 && usbLineInfo.lineState&usb_CDC_LINESTATE_DTR == 0 {
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EnterSerialBootloader()
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}
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}
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// EnterSerialBootloader resets the chip into the serial bootloader. After
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// reset, it can be flashed using serial/nrfutil.
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func EnterSerialBootloader() {
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arm.DisableInterrupts()
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nrf.POWER.GPREGRET.Set(DFU_MAGIC_SERIAL_ONLY_RESET)
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arm.SystemReset()
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}
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