How does Peripheral role configuration affect the RAM impact of s132?

RE: How does Peripheral role configuration affect the RAM impact of s132?

MartinBL — Fri, 12 Oct 2018 14:12:48 GMT

Hi,

The various layers in the stack all create individual buffers per link. So multiple buffers are created each time you add another link and their length is varying dependent on your MTU size.

The GAP Event length does indeed impact RAM requirements, but how much (if anything at all) depends on the event length relative to the packet length. I did some quick tests:

Link Count	MTU size	Event length	RAM requirements
1	23	3	8416
1	247	3	10064
1	247	4	10064
1	247	6	10584

You can see that if I increase the event length from 3 to 4 nothing happens, but if I double the value to 6 the RAM requirements increase by 520 bytes.

RE: How does Peripheral role configuration affect the RAM impact of s132?

MartinBL — Fri, 12 Oct 2018 14:11:18 GMT

Hi,

The various layers in the stack all create individual buffers per link. So multiple buffers are created each time you add another link and their length is varying dependent on your MTU size.

The GAP Event length does indeed impact RAM requirements, but how much (if anything at all) depends on the event length relative to the packet length. I did some quick tests:

Link Count	MTU size	Event length	RAM requirements
1	23	3	8416
1	247	3	10064
1	247	4	10064
1	247	6	10584

You can see that if I increase the event length from 3 to 4 nothing happens, but if I double the value to 6 the RAM requirements increase by 520 bytes.