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machine: add simulated PWM/timer peripherals

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I will soon use these as part of the TinyGo tour, to explain the PWM
peripherals on common chips.
This commit is contained in:
Ayke van Laethem
2025-04-30 14:13:04 +02:00
committed by Ron Evans
parent 612a38e363
commit 72b19555dc
4 changed files with 298 additions and 0 deletions
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src/machine/machine_rp2040_simulator.go
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//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)
// Simulator support for the RP2040.
//
// This is *only* for the RP2040. RP2350 is a different chip with slightly
// different characteristics.
package machine
var PWM0 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256}, // actually a continuing range, TODO
channelPins: [][]Pin{
{GPIO0, GPIO16}, // channel A (0)
{GPIO1, GPIO17}, // channel B (1)
},
}
var PWM1 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
channelPins: [][]Pin{
{GPIO2, GPIO18}, // channel A (0)
{GPIO3, GPIO19}, // channel B (1)
},
}
var PWM2 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
channelPins: [][]Pin{
{GPIO4, GPIO20}, // channel A (0)
{GPIO5, GPIO21}, // channel B (1)
},
}
var PWM3 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
channelPins: [][]Pin{
{GPIO6, GPIO22}, // channel A (0)
{GPIO7, GPIO23}, // channel B (1)
},
}
var PWM4 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
channelPins: [][]Pin{
{GPIO8, GPIO24}, // channel A (0)
{GPIO9, GPIO25}, // channel B (1)
},
}
var PWM5 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
channelPins: [][]Pin{
{GPIO10, GPIO26}, // channel A (0)
{GPIO11, GPIO27}, // channel B (1)
},
}
var PWM6 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
channelPins: [][]Pin{
{GPIO12, GPIO28}, // channel A (0)
{GPIO13, GPIO29}, // channel B (1)
},
}
var PWM7 = timerType{
instance: 0,
frequency: 200e6,
bits: 16,
prescalers: []int{1, 2, 4, 8, 16, 32, 64, 128, 256},
channelPins: [][]Pin{
{GPIO14}, // channel A (0)
{GPIO15}, // channel B (1)
},
}