mirror of
https://github.com/tinygo-org/tinygo.git
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Ayke van Laethem
f845b469b1
This fixes/improves a few issues with I2C support:
* Validate I2C pins, so only pins that are supported by the hardware
can be used (similar to how it's done with PWM).
* Add address to Tx API (without it, the simulator can't really
simulate I2C).
* Add frequency when configuring. Not currently used, but might be
useful in the future and adding it now avoids possibly breaking
changes.
This is a breaking change, but since the simulator doesn't support I2C
yet that seems fine to me. (It does in my local changes, but those need
to be cleaned up before I can push them).
109 lines
2.6 KiB
Go
109 lines
2.6 KiB
Go
//go:build !baremetal && (ae_rp2040 || badger2040_w || badger2040 || challenger_rp2040 || elecrow_rp2040 || feather_rp2040 || gopher_badge || kb2040 || macropad_rp2040 || nano_rp2040 || pico || qtpy_rp2040 || thingplus_rp2040 || thumby || trinkey_qt2040 || tufty2040 || waveshare_rp2040_tiny || waveshare_rp2040_zero || xiao_rp2040)
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// Simulator support for the RP2040.
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//
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// This is *only* for the RP2040. RP2350 is a different chip with slightly
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// different characteristics.
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package machine
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var PWM0 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256}, // actually a continuing range, TODO
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channelPins: [][]Pin{
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{GPIO0, GPIO16}, // channel A (0)
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{GPIO1, GPIO17}, // channel B (1)
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},
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}
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var PWM1 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
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channelPins: [][]Pin{
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{GPIO2, GPIO18}, // channel A (0)
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{GPIO3, GPIO19}, // channel B (1)
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},
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}
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var PWM2 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
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channelPins: [][]Pin{
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{GPIO4, GPIO20}, // channel A (0)
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{GPIO5, GPIO21}, // channel B (1)
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},
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}
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var PWM3 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
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channelPins: [][]Pin{
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{GPIO6, GPIO22}, // channel A (0)
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{GPIO7, GPIO23}, // channel B (1)
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},
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}
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var PWM4 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
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channelPins: [][]Pin{
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{GPIO8, GPIO24}, // channel A (0)
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{GPIO9, GPIO25}, // channel B (1)
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},
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}
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var PWM5 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
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channelPins: [][]Pin{
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{GPIO10, GPIO26}, // channel A (0)
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{GPIO11, GPIO27}, // channel B (1)
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},
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}
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var PWM6 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
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channelPins: [][]Pin{
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{GPIO12, GPIO28}, // channel A (0)
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{GPIO13, GPIO29}, // channel B (1)
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},
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}
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var PWM7 = &timerType{
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instance: 0,
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frequency: 200e6,
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bits: 16,
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prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
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channelPins: [][]Pin{
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{GPIO14}, // channel A (0)
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{GPIO15}, // channel B (1)
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},
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}
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var I2C0 = &I2C{
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Bus: 0,
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PinsSCL: []Pin{GPIO1, GPIO5, GPIO9, GPIO13, GPIO17, GPIO21},
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PinsSDA: []Pin{GPIO0, GPIO4, GPIO8, GPIO12, GPIO16, GPIO20},
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}
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var I2C1 = &I2C{
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Bus: 0,
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PinsSCL: []Pin{GPIO3, GPIO7, GPIO11, GPIO15, GPIO19, GPIO27},
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PinsSDA: []Pin{GPIO2, GPIO6, GPIO10, GPIO14, GPIO18, GPIO26},
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}
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