FaSTTUBe/STM32-DS2482-HAL
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allow access to device verification function

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This commit is contained in:
Kilian Bracher 2024-06-27 02:22:01 +02:00
parent fa9ab6a252
commit c88b00dfe1
Signed by: k.bracher
SSH Key Fingerprint: SHA256:mXpyZkK7RDiJ7qeHCKJX108woM0cl5TrCvNBJASu6lM
2 changed files with 12 additions and 24 deletions
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35
DS2482_HAL.c
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@ -1,5 +1,4 @@
#include "DS2482_HAL.h"
#include "errors.h"
#include <stdint.h>
static I2C_HandleTypeDef* hi2c;
@ -188,7 +187,7 @@ static uint8_t crc8;
// Setup the search to find the device type 'family_code' on the next call
// to OWNext() if it is present.
//
static void OWTargetSetup(uint8_t family_code) {
[[maybe_unused]] static void OWTargetSetup(uint8_t family_code) {
int i;
// set the search state to find SearchFamily type devices
@ -204,7 +203,7 @@ static void OWTargetSetup(uint8_t family_code) {
// Setup the search to skip the current device type on the next call
// to OWNext().
//
static void OWFamilySkipSetup() {
[[maybe_unused]] static void OWFamilySkipSetup() {
// set the Last discrepancy to last family discrepancy
LastDiscrepancy = LastFamilyDiscrepancy;
LastFamilyDiscrepancy = 0;
@ -413,21 +412,16 @@ static inline bool OWNext() {
return OWSearch();
}
//--------------------------------------------------------------------------
// Verify the device with the ROM number in ROM_NO buffer is present.
// Return true : device verified present
// false : device not present
//
static bool OWVerify() {
uint8_t rom_backup[8];
int i, rslt, ld_backup, ldf_backup, lfd_backup;
// keep a backup copy of the current state
for (i = 0; i < 8; i++)
// Verify the device with the ROM number in ROM_NO buffer is present.
HAL_StatusTypeDef ds2482_1w_verify_device(uint64_t device, bool* present) {
uint8_t rom_backup[8];
int i, rslt;
for (int i = 0; i < 8; i++) {
ROM_NO[i] = (device >> (i * 8)) & 0xFF;
rom_backup[i] = ROM_NO[i];
ld_backup = LastDiscrepancy;
ldf_backup = LastDeviceFlag;
lfd_backup = LastFamilyDiscrepancy;
}
// set search to find the same device
LastDiscrepancy = 64;
@ -444,14 +438,7 @@ static bool OWVerify() {
}
} else
rslt = false;
// restore the search state
for (i = 0; i < 8; i++)
ROM_NO[i] = rom_backup[i];
LastDiscrepancy = ld_backup;
LastDeviceFlag = ldf_backup;
LastFamilyDiscrepancy = lfd_backup;
// return the result of the verify
return rslt;
}

1
DS2482_HAL.h
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@ -47,5 +47,6 @@ HAL_StatusTypeDef ds2482_1w_read_byte(uint8_t* byte);
HAL_StatusTypeDef ds2482_1w_triplet(uint8_t dir);
HAL_StatusTypeDef ds2482_1w_search(uint16_t max_devices, uint64_t devices[static max_devices]);
HAL_StatusTypeDef ds2482_1w_verify_device(uint64_t device, bool* present);
#endif // DS2482_HAL_H