mirror of https://gerrit.osmocom.org/simtrace2
I2C: add wait time after write to let EEPROM write
The Atmel AT24C02 defines a maximum tWR waiting time after a byte write of 5 ms before a next write. Enforcing this wait time also fixed the failed verification in qmod, where it was reading 0xffff instead of the written value. Change-Id: I42c90b8d0329e425f275067e87d584212a43a90b
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@ -185,6 +185,8 @@ int eeprom_write_byte(uint8_t slave, uint8_t addr, uint8_t byte)
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nack = i2c_write_byte(false, true, byte);
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if (nack)
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goto out_stop;
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/* Wait tWR time to ensure EEPROM is writing correctly (tWR = 5 ms for AT24C02) */
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mdelay(5);
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out_stop:
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i2c_stop_cond();
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