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esp32s3 + c3 ADC (#5231)

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* save

* esp32s3: save

* adc

* worker on esp32s3

* worker after flash arduino

* save

* fix

* simple adc

* added adc

* esp32s3-adc: rm debug

* esp32s3-adc: clear

* last refactor

* linters

* esp32s3-adc: recover example

* esp32s3-adc: reuse fuse for esp32c3

* esp32s3-adc: refactor bugs

* esp32s3-adc: fix adc2 for esp32c3

* esp32s3-adc: group to adc files

* esp32s3-adc: revert changing board

* esp32s3-adc: recover example adc

* esp32s3-adc: fix edge values adc & added smoketests

* esp32s3-adc: rename methods

* esp32s3-adc: extends adc tests

* esp32s3-adc: drop debug

* esp32s3-adc: added ADCX const

* esp32s3-adc: change adc tests

* esp32s3-adc: added comment for esp32c3

* esp32s3-adc: drop debug empty loops

* esp32s3-adc: drop duplicate gpio

* esp32s3-adc: change return values to 0..65520
This commit is contained in:
Dima
2026-03-01 23:45:01 +02:00
committed by deadprogram
parent 3c590e36ad
commit 6bb6ea2432
7 changed files with 1123 additions and 31 deletions
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src/machine/machine_esp32s3.go
+31 -5
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@@ -70,6 +70,7 @@ const (
PinInput
PinInputPullup
PinInputPulldown
PinAnalog
)
// Hardware pin numbers
@@ -121,6 +122,29 @@ const (
GPIO48 Pin = 48
)
const (
ADC0 Pin = GPIO1
ADC2 Pin = GPIO2
ADC3 Pin = GPIO3
ADC4 Pin = GPIO4
ADC5 Pin = GPIO5
ADC6 Pin = GPIO6
ADC7 Pin = GPIO7
ADC8 Pin = GPIO8
ADC9 Pin = GPIO9
ADC10 Pin = GPIO10
ADC11 Pin = GPIO11
ADC12 Pin = GPIO12
ADC13 Pin = GPIO13
ADC14 Pin = GPIO14
ADC15 Pin = GPIO15
ADC16 Pin = GPIO16
ADC17 Pin = GPIO17
ADC18 Pin = GPIO18
ADC19 Pin = GPIO19
ADC20 Pin = GPIO20
)
// Configure this pin with the given configuration.
func (p Pin) Configure(config PinConfig) {
// Output function 256 is a special value reserved for use as a regular GPIO
@@ -146,8 +170,10 @@ func (p Pin) configure(config PinConfig, signal uint32) {
// MCU_SEL: Function 1 is always GPIO
ioConfig |= (1 << esp.IO_MUX_GPIO_MCU_SEL_Pos)
// FUN_IE: Make this pin an input pin (always set for GPIO operation)
ioConfig |= esp.IO_MUX_GPIO_FUN_IE
// FUN_IE: disable for PinAnalog (high-Z for ADC), enable for digital
if config.Mode != PinAnalog {
ioConfig |= esp.IO_MUX_GPIO_FUN_IE
}
// DRV: Set drive strength to 20 mA as a default. Pins 17 and 18 are special
var drive uint32
@@ -158,7 +184,7 @@ func (p Pin) configure(config PinConfig, signal uint32) {
}
ioConfig |= (drive << esp.IO_MUX_GPIO_FUN_DRV_Pos)
// WPU/WPD: Select pull mode.
// WPU/WPD: no pulls for PinAnalog
if config.Mode == PinInputPullup {
ioConfig |= esp.IO_MUX_GPIO_FUN_WPU
} else if config.Mode == PinInputPulldown {
@@ -181,14 +207,14 @@ func (p Pin) configure(config PinConfig, signal uint32) {
// output signal, or the special value 256 which indicates regular GPIO
// usage.
p.outFunc().Set(signal)
case PinInput, PinInputPullup, PinInputPulldown:
case PinInput, PinInputPullup, PinInputPulldown, PinAnalog:
// Clear the 'output enable' bit.
if p < 32 {
esp.GPIO.ENABLE_W1TC.Set(1 << p)
} else {
esp.GPIO.ENABLE1_W1TC.Set(1 << (p - 32))
}
if signal != 256 {
if signal != 256 && config.Mode != PinAnalog {
// Signal is a peripheral function (not a simple GPIO). Connect this
// signal to the pin.
// Note that outFunc and inFunc work in the opposite direction.