Hi Guys,
I read the C-code about the dual motor demo board ,there is a question shown as below:
The C-code from the Project as below:
/*
* Declaration macro keeps all necessary settings for single/dual
* motor control application under one command.
*/
#define DECLARATION(param, uni3_param, pospe_param, cb_param, enc_avaliable, res_avaliable) static pmsmDrive_t param = { CFOC_DEFAULT,\
uni3_param##_CFG_DEFAULT,\
pospe_param##_CFG_DEFAULT,\
enc_avaliable,\
res_avaliable,\
MPC5643L_BGA257_##cb_param##_DEFAULT,\
CNTR_STATE_DEFAULT,\
SCALAR_CNTR_STATE_DEFAULT};
My analysis and question:
AS i use the 'define' before,
#define A 5 --- equal to A=5; According to the similar to analyze it that DECLARATION = param,but it seems not right,The reason is that the parameters order of DECLARATION is (1)param, (2)uni3_param, (3)pospe_param, (4)cb_param, (5)enc_avaliable, (6)res_avaliable ,but the assignment is (1)CFOC_DEFAULT (2)uni3_param##_CFG_DEFAULT (3)pospe_param##_CFG_DEFAULT,\(4) enc_avaliable,\(5) res_avaliable,\ (6)MPC5643L_BGA257_##cb_param##_DEFAULT,\(7)CNTR_STATE_DEFAULT,\
(8)SCALAR_CNTR_STATE_DEFAULT};
1# The order and the numbers is the same, Why adding the CNTR_STATE_DEFAULT and SCALAR_CNTR_STATE_DEFAULT?
2# How to comprehend the uni3_param##_CFG_DEFAULT?
3#Assign the order of the Value is rignt?
