Hi,
with the following sample code...
typedef __packed struct { uint8_t field_1; uint8_t field_2; uint8_t field_3; uint8_t field_4; } T_Sub; typedef __packed struct { T_Sub Sub; uint8_t field_1; uint8_t field_2; uint8_t field_3; uint8_t field_4; } T_Data; typedef __packed union { T_Data content; uint8_t buffer[sizeof(T_Data)]; } T_Union; const T_Union C_Union = { {1,2,3,4}, 1, 2, 3, 4, 5}; // The following (no union, just strcut) has the same problem /* typedef __packed struct { T_Data content; } T_Struct; const T_Struct C_Struct = { {1,2,3,4}, 1, 2, 3, 4, 5}; */
I get:
error: #146: too many initializer values
I'm using uVision4. The same code works on other compilers. I'm obviously missing something big but I can't figure what...
@Stefan HartwigPosted Yes, it works... kinda fussy :-)
@stephen phillipsPosted According to many C bibles, the first field of the union is the one that is assigned., there shoud no be ambiguity... My code does use macros but I wroted a simple example to exlcude eventual macro errors...
Thank you
Yes, it works... kinda fussy :-) It isn't fussy at all. Strip down what you are doing:
typedef __packed struct { uint8_t field_1; uint8_t field_2; uint8_t field_3; uint8_t field_4; } T_Sub; const T_Sub T_Sub_example = {1, 2, 3, 4}; typedef __packed struct { T_Sub Sub; uint8_t field_1; uint8_t field_2; uint8_t field_3; uint8_t field_4; } T_Data; const T_Data T_Data_example = { /* T_Sub_example */ {1, 2, 3, 4}, /* field_1 to field_4 */ 5, 6, 7, 8 }; typedef __packed union { T_Data content; uint8_t buffer[sizeof(T_Data)]; } T_Union; const T_Union T_Union_example = { /* T_Data_example */ { /* T_Sub_example */ {1, 2, 3, 4}, /* field_1 to field_4 */ 5, 6, 7, 8 } /* empty since the array "buffer" is not initialized */ };