Function

Write one byte to a specified location in EEPROM

Purpose

Access to EEPROM

Syntax

void eeWriteByte(uns8 address, uns8 data)

Parameters

•     address: address in EEPROM  (0x80 to 0xBF for Coordinator and 0 to 0xBF for other devices). See IQRF OS User’s guide, EEPROM map.

•     data: value to be written (0 to 255)

Return value

  –

Output values

  –

Preconditions

  –

Remarks

•     Direct user access to EEPROM (using registers EECONx etc.) is not allowed for security reasons, specialized OS functions are intended for this.

•     EEPROM area dedicated to OS (locations 0xC0 or higher) is not accessible.

•     See Example E04-EEPROM.

•     Any attempt to write to the protected area above 0xBF leads to no operation.

Side effects

  –

See also

eeReadByte, eeReadData, eeWriteData

Example 1

eeWriteByte(0xBF, 0x75)          // store 0x75 to EEPROM to address 0xBF

eeWriteByte(0x80, myVar)         // copy myVar to EEPROM to address 0x80

Example 2

   // Illegal access: Avoid access to EEPROM locations 0xC0 or higher

eeWriteByte(0xC6, 0x75);         // Attempt to write to protected area – nothing is                                   // written.