topic Re: lpc11c24 CANopen example AN11238_1 in LPC Microcontrollers

lpc11c24 CANopen example AN11238_1

lpcware — Wed, 15 Jun 2016 19:44:12 GMT

Content originally posted in LPCWare by andre.marschalek on Tue Aug 19 16:12:26 MST 2014
hello,

i have a question regarding your canopen example implementation

reference your documentation section 4.3.4
how should CANopen_SDOC_Seg_Write work or better asked where does this example really transmit the buffer to the slave?

br
Andre

Re: lpc11c24 CANopen example AN11238_1

lpcware — Wed, 15 Jun 2016 19:44:13 GMT

Content originally posted in LPCWare by LabRat on Tue Aug 19 16:25:06 MST 2014

Quote: andre.marschalek
...where does this example really transmit the buffer to the slave?

Master sample->main.c line 208:

CANopen_SDOC_Seg_Write(CAN_SLAVE1_NODE, 0x2200, 0x00, buffer, i-1);

Re: lpc11c24 CANopen example AN11238_1

lpcware — Wed, 15 Jun 2016 19:44:14 GMT

Content originally posted in LPCWare by andre.marschalek on Tue Aug 19 16:30:34 MST 2014
thx for your answer but have you checked the source of CANopen_SDOC_Seg_Write ?
it only transferres the length of the buffer but not the buffer itself?

another question is i dont think canopen defines a restriction like OD_SEG_RW for an OD which is the case for SDOS_2200
can defines for OD's rw, wo, ro and const, means no restriction to expedited or segmented access?

Re: lpc11c24 CANopen example AN11238_1

lpcware — Wed, 15 Jun 2016 19:44:14 GMT

Content originally posted in LPCWare by LabRat on Tue Aug 19 16:44:28 MST 2014

Quote: andre.marschalek
thx for your answer but have you checked the source of CANopen_SDOC_Seg_Write ?

No, I'm seeing this code the first time today :D

Quote: andre.marschalek
it only transferres the length of the buffer but not the buffer itself?

Do you know how segmented transfer is working?

If not, follow the magic word: [color=#f00]CANopen_SDOC_Seg_Write_Busy[/color] :)

Re: lpc11c24 CANopen example AN11238_1

lpcware — Wed, 15 Jun 2016 19:44:15 GMT

Content originally posted in LPCWare by andre.marschalek on Tue Aug 19 16:58:42 MST 2014
i know how segmented transfer is working thats specified in ds301
however thx for pointing me to the right direction can_rx/tx

the only question left is the seg|exp access type where i cant find this specification in ds301