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deadprogram
75 lines
2.0 KiB
Go
75 lines
2.0 KiB
Go
//go:build microbit_v2
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// Package microbitmatrix implements a driver for the BBC micro:bit version 2 LED matrix.
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//
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// Schematic: https://github.com/microbit-foundation/microbit-v2-hardware/blob/main/V2.00/MicroBit_V2.0.0_S_schematic.PDF
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package microbitmatrix // import "tinygo.org/x/drivers/microbitmatrix"
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import (
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"machine"
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)
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// 4 rotation orientations (0, 90, 180, 270), CW (clock wise)
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// 5 rows
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// 5 cols
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// target coordinates in machine rows (y) and cols (x)
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var matrixRotations = [4][5][5][2]uint8{
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{ // 0
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{{0, 0}, {0, 1}, {0, 2}, {0, 3}, {0, 4}},
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{{1, 0}, {1, 1}, {1, 2}, {1, 3}, {1, 4}},
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{{2, 0}, {2, 1}, {2, 2}, {2, 3}, {2, 4}},
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{{3, 0}, {3, 1}, {3, 2}, {3, 3}, {3, 4}},
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{{4, 0}, {4, 1}, {4, 2}, {4, 3}, {4, 4}},
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},
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{ // 90 CW
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{{0, 4}, {1, 4}, {2, 4}, {3, 4}, {4, 4}},
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{{0, 3}, {1, 3}, {2, 3}, {3, 3}, {4, 3}},
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{{0, 2}, {1, 2}, {2, 2}, {3, 2}, {4, 2}},
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{{0, 1}, {1, 1}, {2, 1}, {3, 1}, {4, 1}},
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{{0, 0}, {1, 0}, {2, 0}, {3, 0}, {4, 0}},
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},
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{ // 180
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{{4, 4}, {4, 3}, {4, 2}, {4, 1}, {4, 0}},
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{{3, 4}, {3, 3}, {3, 2}, {3, 1}, {3, 0}},
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{{2, 4}, {2, 3}, {2, 2}, {2, 1}, {2, 0}},
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{{1, 4}, {1, 3}, {1, 2}, {1, 1}, {1, 0}},
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{{0, 4}, {0, 3}, {0, 2}, {0, 1}, {0, 0}},
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},
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{ // 270
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{{4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
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{{4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
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{{4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
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{{4, 3}, {3, 3}, {2, 3}, {1, 3}, {0, 3}},
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{{4, 4}, {3, 4}, {2, 4}, {1, 4}, {0, 4}},
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},
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}
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const (
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ledRows = 5
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ledCols = 5
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)
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type Device struct {
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pin [ledCols + ledRows]machine.Pin
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buffer [ledRows][ledCols]int8
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rotation uint8
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}
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func (d *Device) assignPins() {
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d.pin[0] = machine.LED_COL_1
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d.pin[1] = machine.LED_COL_2
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d.pin[2] = machine.LED_COL_3
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d.pin[3] = machine.LED_COL_4
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d.pin[4] = machine.LED_COL_5
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d.pin[5] = machine.LED_ROW_1
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d.pin[6] = machine.LED_ROW_2
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d.pin[7] = machine.LED_ROW_3
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d.pin[8] = machine.LED_ROW_4
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d.pin[9] = machine.LED_ROW_5
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for i := 0; i < len(d.pin); i++ {
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d.pin[i].Configure(machine.PinConfig{Mode: machine.PinOutput})
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}
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}
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