getJEDECID

Signatures

• uint32_t SPIFlash::getJEDECID(void)
• uint32_t SPIFram::getJEDECID(void)

What It Is For

Read JEDEC triplet (manufacturer + memory type + capacity code) used to identify the chip model family.

Parameters

• No parameters.

Behavior Details

Primary identity check for memory chips. Many diagnostics and support flows begin with this value.

Return Semantics

Returns JEDEC ID packed into a 32-bit value.

Failure Behavior

Zero or unstable values indicate communication faults, wrong voltage, wrong chip-select, or unsupported devices.

Common Mistakes

• Proceeding when JEDEC ID is 0x000000 or unstable.
• Assuming every JEDEC ID is in the library support list.
• Not logging JEDEC ID in support/troubleshooting reports.

Choosing Between Similar APIs

• Use getJEDECID() as primary identity check.
• Use getManID() only as a coarse supplement.
• Use getCapacity() after successful begin for operational bounds.

Example

uint32_t jedec = flash.getJEDECID();
Serial.print("JEDEC: 0x");
Serial.println(jedec, HEX);