FaSTTUBe/STM32-DS2482-HAL
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add 1-wire helper functions

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This commit is contained in:
Kilian Bracher 2024-06-29 18:26:12 +02:00
parent 921fd4234a
commit befb7e006c
1 changed files with 52 additions and 14 deletions

66
DS2482_HAL.h

@ -45,28 +45,66 @@ static_assert (DS2482_TIMEOUT_I2C > 0, "DS2482_TIMEOUT_I2C cannot be negative");
return (ds2482_t){.hi2c = hi2c, .address = address};
}
#define DEV_ARG const ds2482_t * const ds2482,
#define DEV_ARG ds2482,
#define DEV_ARG_DEF const ds2482_t * const ds2482,
#define DEV_ARG_ONE ds2482
#define DEV_ARG_ONE_DEF const ds2482_t* const ds2482
nag_attr HAL_StatusTypeDef ds2482_init(const ds2482_t * const ds2482);
nag_attr HAL_StatusTypeDef ds2482_reset(const ds2482_t * const ds2482);
#else
nag_attr HAL_StatusTypeDef ds2482_init(I2C_HandleTypeDef* hi2c);
nag_attr HAL_StatusTypeDef ds2482_reset();
#define DEV_ARG
#define DEV_ARG_DEF
#define DEV_ARG_ONE
#define DEV_ARG_ONE_DEF
nag_attr HAL_StatusTypeDef ds2482_init(I2C_HandleTypeDef* hi2c);
#endif
nag_attr HAL_StatusTypeDef ds2482_write_config(DEV_ARG uint8_t config);
nag_attr HAL_StatusTypeDef ds2482_set_read_ptr(DEV_ARG uint8_t read_ptr);
nag_attr HAL_StatusTypeDef ds2482_1w_reset(DEV_ARG bool* presence);
nag_attr HAL_StatusTypeDef ds2482_1w_write_byte(DEV_ARG uint8_t byte);
nag_attr HAL_StatusTypeDef ds2482_1w_read_byte(DEV_ARG uint8_t* byte);
nag_attr HAL_StatusTypeDef ds2482_1w_read_bit(DEV_ARG bool* bit);
nag_attr HAL_StatusTypeDef ds2482_1w_write_bit(DEV_ARG bool bit);
nag_attr HAL_StatusTypeDef ds2482_1w_triplet(DEV_ARG uint8_t dir);
nag_attr HAL_StatusTypeDef ds2482_reset(DEV_ARG_ONE_DEF);
nag_attr HAL_StatusTypeDef ds2482_write_config(DEV_ARG_DEF uint8_t config);
nag_attr HAL_StatusTypeDef ds2482_set_read_ptr(DEV_ARG_DEF uint8_t read_ptr);
nag_attr HAL_StatusTypeDef ds2482_1w_reset(DEV_ARG_DEF bool* presence);
nag_attr HAL_StatusTypeDef ds2482_1w_write_byte(DEV_ARG_DEF uint8_t byte);
nag_attr HAL_StatusTypeDef ds2482_1w_read_byte(DEV_ARG_DEF uint8_t* byte);
nag_attr HAL_StatusTypeDef ds2482_1w_read_bit(DEV_ARG_DEF bool* bit);
nag_attr HAL_StatusTypeDef ds2482_1w_write_bit(DEV_ARG_DEF bool bit);
nag_attr HAL_StatusTypeDef ds2482_1w_triplet(DEV_ARG_DEF uint8_t dir);
nag_attr HAL_StatusTypeDef ds2482_1w_search(DEV_ARG uint16_t max_devices, uint64_t devices[static max_devices]);
nag_attr HAL_StatusTypeDef ds2482_1w_verify_device(DEV_ARG uint64_t device, bool* present);
nag_attr HAL_StatusTypeDef ds2482_1w_search(DEV_ARG_DEF uint16_t max_devices, uint64_t devices[static max_devices]);
nag_attr HAL_StatusTypeDef ds2482_1w_verify_device(DEV_ARG_DEF uint64_t device, bool* present);
//helper functions
#define DS2482_1W_ROM_MATCH 0x55
#define DS2482_1W_ROM_SKIP 0xCC
nag_attr static inline HAL_StatusTypeDef ds2482_1w_select_device(DEV_ARG_DEF uint64_t device) {
bool present;
HAL_StatusTypeDef status = ds2482_1w_reset(DEV_ARG &present);
if (status != HAL_OK) return status;
if (!present) return HAL_ERROR;
status = ds2482_1w_write_byte(DEV_ARG DS2482_1W_ROM_MATCH);
if (status != HAL_OK) return status;
for (int i = 0; i < 8; i++) {
status = ds2482_1w_write_byte(DEV_ARG (device >> (i * 8)) & 0xFF);
if (status != HAL_OK) return status;
}
return HAL_OK;
}
nag_attr static inline HAL_StatusTypeDef ds2482_1w_select_all(DEV_ARG_ONE_DEF) {
bool present;
HAL_StatusTypeDef status = ds2482_1w_reset(DEV_ARG &present);
if (status != HAL_OK) return status;
if (!present) return HAL_ERROR;
return ds2482_1w_write_byte(DEV_ARG DS2482_1W_ROM_SKIP);
}
#undef nag_attr
#undef DEV_ARG_DEF
#undef DEV_ARG
#undef DEV_ARG_ONE
#undef DEV_ARG_ONE_DEF
#undef DS2482_1W_ROM_MATCH
#undef DS2482_1W_ROM_SKIP
#endif // DS2482_HAL_H