i2c still not working for me

[Daniel Braniss]

Hi,
after the latest changes to i2c there is a small improvement,
i2c -s finds the device but complains:

root at neo-14:~ # i2c -s
Hardware may not support START/STOP scanning; trying less-reliable read method.
Scanning I2C devices on /dev/iic0: 24

but nothing else works.

I’ll try and connect my saleae signal analyzer later, but  in the meantime this is what I get
on the console:
[…]
iichb0: twsi_control_clear: read val=58
iichb0: twsi_control_clear: write val=40
iichb0: TWSI_WRITE: Writing 40 to c
iichb0: twsi_start: twsi_start: slave=48
iichb0: twsi_locked_start: send start
iichb0: TWSI_READ: read 58 from c
iichb0: twsi_control_set: read val=58
iichb0: twsi_control_set: write val=68
iichb0: TWSI_WRITE: Writing 68 to c
iichb0: twsi_poll_ctrl: Waiting for ctrl r.
eg to match mask 8
iichb0: TWSI_READ: read 48 from c
gic0: iichb0: Spurious interrupt detected: last irq: 32 on CPU1
twsi_poll_ctrl: done
gic0: iichb0: Spurious interrupt detected: last irq: 32 on CPU1
TWSI_READ: read 8 from 10
iichb0: twsi_locked_start: status=8
iichb0: TWSI_WRITE: Writing 48 to 8
gic0: Spurious interrupt detected: last irq: 32 on CPU1
iichb0: TWSI_READ: read 48 from c
gic0: iichb0: Spurious interrupt detected: last irq: 32 on CPU1
twsi_control_clear: read val=48
gic0: iichb0: Spurious interrupt detected: last irq: 32 on CPU1
twsi_control_clear: write val=40
gic0: iichb0: Spurious interrupt detected: last irq: 32 on CPU1
TWSI_WRITE: Writing 40 to c
gic0: Spurious interrupt detected: last irq: 32 on CPU1
iichb0: twsi_poll_ctrl: Waiting for ctrl reg to match mask 8
gic0: iichb0: Spurious interrupt detected: last irq: 32 on CPU1
TWSI_READ: read 48 from c
iichb0: twsi_poll_ctrl: done
iichb0: TWSI_READ: read 8 from 10
iichb0: twsi_locked_start: no ACK (status: 08) after sending slave address
gic0: iichb0: Spurious interrupt detected: last irq: 32 on CPU1
twsi_stop: twsi_stop
[…]

BTW, the hardware is NanoPi-neo and it’s running Current 345984

thanks,
	danny