On Friday, 24. September 2010 11:54:44 Thomas Jarosch wrote:
> The old code states addr 08, bit 04 is "battery powered", I am
> wondering where that came from...
From this patch (Juergen Beisert):
Index: src/ftdi.c
===================================================================
--- src/ftdi.c.orig
+++ src/ftdi.c
@@ -1097,14 +1097,17 @@ int ftdi_eeprom_build(struct ftdi_eeprom
output[0x07] = 0x02;
// Addr 08: Config descriptor
- // Bit 1: remote wakeup if 1
- // Bit 0: self powered if 1
+ // Bit 7: always 1
+ // Bit 6: 1 if this device is self powered, 0 if bus powered
+ // Bit 5: 1 if this device uses remote wakeup
+ // Bit 4: 1 if this device is battery powered
//
- j = 0;
+ //
+ j = 0x80;
if (eeprom->self_powered == 1)
- j = j | 1;
+ j |= 0x40;
if (eeprom->remote_wakeup == 1)
- j = j | 2;
+ j |= 0x20;
output[0x08] = j;
// Addr 09: Max power consumption: max power = value * 2 mA
-> The "battery powered" comment was an easter egg ;)
Thomas
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