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https://github.com/rstrouse/ESPSomfy-RTS.git
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92e69d599f
GPIO2 on the original ESP32, 46 on the S2/S3 and 8 on the C3/C6 don't stop a normal boot, but held at the wrong level at reset they keep esptool from starting the download mode. The WT32-ETH01 wiring puts TX on GPIO2. Each warning now says what the pin does and what to do: move it for a pin that stops the boot, disconnect it to flash for one that only blocks USB. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
43 lines
2.4 KiB
JavaScript
43 lines
2.4 KiB
JavaScript
// The strapping pins whose level at reset can keep each chip from starting
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// the firmware, or from being flashed over USB, as src/BootPins.h has them
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// for the log. A radio that drives one at reset stops the board booting
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// until EN is pressed (issue #34), or esptool from connecting. Keep the
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// pins, the radio pins checked and the shared RX/TX rule in step with that
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// file.
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// The minify step joins this file into index.js; Node loads it on its own for
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// the tests (test/js).
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class BootPins {
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// A warning for each of the radio config's pins that can stop the board
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// booting or being flashed.
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static radioWarnings(chipModel, config) {
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const chip = BootPins.CHIPS[chipModel || ''] || {};
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const warnings = [];
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for (const [field, name] of BootPins.RADIO_PINS) {
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const pin = config[field];
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if (field === 'RXPin' && pin === config.TXPin) continue;
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const effect = chip[pin];
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if (effect) warnings.push(`${name} is on GPIO-${pin}, a strapping pin the radio can drive at reset. ${effect}`);
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}
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return warnings;
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}
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}
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BootPins.DOWNLOAD = 'Held low, it starts the download mode instead of the firmware: move it to another pin.';
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BootPins.FLASH_1V8 = 'Held high, it powers the flash at 1.8 V and the board bootloops: move it to another pin.';
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BootPins.NO_USB_HIGH = 'Held high, it stops flashing over USB, so disconnect it to flash.';
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BootPins.NO_USB_LOW = 'Held low, it stops flashing over USB, so disconnect it to flash.';
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// By the chip model the header sends, '' for the original ESP32.
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BootPins.CHIPS = {
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'': { 0: BootPins.DOWNLOAD, 12: BootPins.FLASH_1V8, 2: BootPins.NO_USB_HIGH },
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s2: { 0: BootPins.DOWNLOAD, 45: BootPins.FLASH_1V8, 46: BootPins.NO_USB_HIGH },
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s3: { 0: BootPins.DOWNLOAD, 45: BootPins.FLASH_1V8, 46: BootPins.NO_USB_HIGH },
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c3: { 9: BootPins.DOWNLOAD, 8: BootPins.NO_USB_LOW },
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c5: { 28: BootPins.DOWNLOAD },
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c6: { 9: BootPins.DOWNLOAD, 8: BootPins.NO_USB_LOW },
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p4: { 35: BootPins.DOWNLOAD },
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p4es: { 35: BootPins.DOWNLOAD }
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};
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// The radio pins the CC1101 drives: at power-up GDO0 puts out a clock, GDO2
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// CHIP_RDYn, and SO follows CHIP_RDYn while CSN is low. Once it is set up,
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// GDO2 puts out what it hears.
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BootPins.RADIO_PINS = [['TXPin', 'TX'], ['RXPin', 'RX'], ['MISOPin', 'MISO']];
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if (typeof module !== 'undefined' && module.exports) module.exports = { BootPins };
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