Insight shows no TCA0 registers for the AVR128DA32

[GeorgPerthil]

I have Bloom 1.0.0 installed on an Ubuntu 22.04.4 LTS. I can connect to the AVR (using mEDBG), but as mentioned in the title, there is no TCA0 shown in the target registers. I also tried an ATtiny1626, there is no TCA0 too. Maybe, it is because the TCA0 can be run in single and split mode? MPLAB-X shows both modes.

[navnavnav]

Hi @GeorgPerthil,

Thanks for reporting this.

Ah yes, this appears to be due to the fact that the TCA module contains nested register groups, which Bloom doesn't support ATM. Those register groups are being ignored, and so the peripheral is considered to have no registers, which is why it's not appearing in the Insight GUI.

This issue should be fixed in the next release, as I have since refactored Bloom's TDF parser to accommodate nested register groups. Both the SINGLE and SPLIT registers from the TCA module will appear in the Insight GUI, as nested groups.

I still have a lot of work to do before the next release is ready, so I'm afraid you'll have to go without this fix for some time.

In the meantime, you could use GDB to inspect the register. Something like:

x/1bfx 0x00800A00

That should print the contents of the CTRLA register from the TCA0 peripheral, which is located at 0x00000A00. Notice the OR'ing of the address with 0x00800000 - this is required by GDB for all peripheral register addresses.

Here's a list of the other registers for that peripheral:

Absolute key	Name	Address space key	Address	Size (bytes)	Description
tca0.single.ctrla	CTRLA	data	0x00000A00	1	Control A
tca0.split.ctrla	CTRLA	data	0x00000A00	1	Control A
tca0.single.ctrlb	CTRLB	data	0x00000A01	1	Control B
tca0.split.ctrlb	CTRLB	data	0x00000A01	1	Control B
tca0.single.ctrlc	CTRLC	data	0x00000A02	1	Control C
tca0.split.ctrlc	CTRLC	data	0x00000A02	1	Control C
tca0.single.ctrld	CTRLD	data	0x00000A03	1	Control D
tca0.split.ctrld	CTRLD	data	0x00000A03	1	Control D
tca0.single.ctrleclr	CTRLECLR	data	0x00000A04	1	Control E Clear
tca0.split.ctrleclr	CTRLECLR	data	0x00000A04	1	Control E Clear
tca0.single.ctrleset	CTRLESET	data	0x00000A05	1	Control E Set
tca0.split.ctrleset	CTRLESET	data	0x00000A05	1	Control E Set
tca0.single.ctrlfclr	CTRLFCLR	data	0x00000A06	1	Control F Clear
tca0.single.ctrlfset	CTRLFSET	data	0x00000A07	1	Control F Set
tca0.single.evctrl	EVCTRL	data	0x00000A09	1	Event Control
tca0.single.intctrl	INTCTRL	data	0x00000A0A	1	Interrupt Control
tca0.split.intctrl	INTCTRL	data	0x00000A0A	1	Interrupt Control
tca0.single.intflags	INTFLAGS	data	0x00000A0B	1	Interrupt Flags
tca0.split.intflags	INTFLAGS	data	0x00000A0B	1	Interrupt Flags
tca0.single.dbgctrl	DBGCTRL	data	0x00000A0E	1	Degbug Control
tca0.split.dbgctrl	DBGCTRL	data	0x00000A0E	1	Degbug Control
tca0.single.temp	TEMP	data	0x00000A0F	1	Temporary data for 16-bit Access
tca0.single.cnt	CNT	data	0x00000A20	2	Count
tca0.split.lcnt	LCNT	data	0x00000A20	1	Low Count
tca0.split.hcnt	HCNT	data	0x00000A21	1	High Count
tca0.single.per	PER	data	0x00000A26	2	Period
tca0.split.lper	LPER	data	0x00000A26	1	Low Period
tca0.split.hper	HPER	data	0x00000A27	1	High Period
tca0.single.cmp0	CMP0	data	0x00000A28	2	Compare 0
tca0.split.lcmp0	LCMP0	data	0x00000A28	1	Low Compare
tca0.split.hcmp0	HCMP0	data	0x00000A29	1	High Compare
tca0.single.cmp1	CMP1	data	0x00000A2A	2	Compare 1
tca0.split.lcmp1	LCMP1	data	0x00000A2A	1	Low Compare
tca0.split.hcmp1	HCMP1	data	0x00000A2B	1	High Compare
tca0.single.cmp2	CMP2	data	0x00000A2C	2	Compare 2
tca0.split.lcmp2	LCMP2	data	0x00000A2C	1	Low Compare
tca0.split.hcmp2	HCMP2	data	0x00000A2D	1	High Compare
tca0.single.perbuf	PERBUF	data	0x00000A36	2	Period Buffer
tca0.single.cmp0buf	CMP0BUF	data	0x00000A38	2	Compare 0 Buffer
tca0.single.cmp1buf	CMP1BUF	data	0x00000A3A	2	Compare 1 Buffer
tca0.single.cmp2buf	CMP2BUF	data	0x00000A3C	2	Compare 2 Buffer

[navnavnav]

To inspect all registers in that peripheral:

x/61bfx 0x00800A00

That will print all 61 bytes from the 0x00000A00 peripheral base address.