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hal_param_new − Create a HAL parameter |
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int hal_param_bit_new(char *name, hal_param_dir_t dir, hal_bit_t * data_addr, int comp_id) |
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int hal_param_float_new(char *name, hal_param_dir_t dir, hal_float_t * data_addr, int comp_id) |
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int hal_param_u32_new(char *name, hal_param_dir_t dir, hal_u32_t * data_addr, int comp_id) |
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int hal_param_s32_new(char *name, hal_param_dir_t dir, hal_s32_t * data_addr, int comp_id) |
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int hal_param_bit_newf(hal_param_dir_t dir, hal_bit_t * data_addr, int comp_id) |
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int hal_param_float_newf(hal_param_dir_t dir, hal_float_t * data_addr, int comp_id) |
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int hal_param_u32_newf(hal_param_dir_t dir, hal_u32_t * data_addr, int comp_id, char *fmt, ...) |
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int hal_param_s32_newf(hal_param_dir_t dir, hal_s32_t * data_addr, int comp_id, char *fmt, ...) |
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int hal_param_new(char *name, hal_type_t type, hal_in_dir_t dir, void *data_addr, int comp_id) |
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name |
The name to give to the created parameter |
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dir |
The direction of the parameter, from the viewpoint of the component. It may be one of HAL_RO, or HAL_RW A component may assign a value to any parameter, but other programs (such as halcmd) may only assign a value to a parameter that is HAL_RW. |
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data_addr |
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The address of the data, which must lie within memory allocated by hal_malloc. |
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comp_id |
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A HAL component identifier returned by an earlier call to hal_init. |
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fmt, ... |
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A printf-style format string and arguments |
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type |
The type of the parameter, as specified in hal_type_t(3hal). |
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The hal_param_new family of functions create a new param object. There are functions for each of the data types that the HAL supports. Pins may only be linked to signals of the same type. |
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Returns a HAL status code. |
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hal_type_t(3hal) |