Wait for I2C power to stabilize on Heltec VME213; tidy variant folder - #4308
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The 3.3V power for the I2C "quick link" connector is from Ve_3V3
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…meshtastic#4308) * Tidy variant.h and pins_arduino.h (VME213) * Wait for peripherals to stabilize after enabling I2C power The 3.3V power for the I2C "quick link" connector is from Ve_3V3
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Heltec Vision Master 213 has a QuickLink-type I2C connector
The 3.3V pin of connector is fed from
Ve_3V3(schematic). This supply is not enabled until partway through setup(), followed soon after by I2C device scan.This causes issues with CardKB detection, and may also impact other I2C devices. This PR adds a one second delay for Heltec Vision Master E213 after enabling peripheral power.
@HarukiToreda found in testing that a 500ms delay was insufficient.
Note: PR also tidies the variant.h, in line with #4226. It may be helpful to view the two commits separately, to make better sense of the diff.