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Both sides previous revision Previous revision Next revision | Previous revision | ||
livebox:hah_i2c [2011/12/31 19:24] – [Firmware debugging] brett | livebox:hah_i2c [2011/12/31 19:31] (current) – [Firmware debugging] brett | ||
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{{: | {{: | ||
- | 328 Firmware (2.x) | + | 328 Firmware (2.x - > 3.x) |
^ PPE Addr ^ I2C Address | ^ PPE Addr ^ I2C Address | ||
^ ::: ^ PCF8574/N ^ PCF8574A ^ | ^ ::: ^ PCF8574/N ^ PCF8574A ^ | ||
Line 84: | Line 84: | ||
===== Firmware debugging ===== | ===== Firmware debugging ===== | ||
- | Although direct control with the AVR isn't necessary, its useful to understand how the underlying commands are being invoked. | + | Although direct control with the AVR isn't necessary, its useful to understand how the underlying commands are being invoked. |
+ | |||
+ | The firmware command "'' | ||
Additional instructions are going to be needed to configure the I2C devices. | Additional instructions are going to be needed to configure the I2C devices. | ||
Line 130: | Line 132: | ||
i2c B4210 - PPE chip at 0x42 write byte 0x10 | i2c B4210 - PPE chip at 0x42 write byte 0x10 | ||
</ | </ | ||
- | |||
- | The firmware command "i2c scan" is VERY useful when making sure that the hardware is correctly setup and configured. | ||
===== xAP control ===== | ===== xAP control ===== |