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M24LR16E-R Datasheet(PDF) 138 Page - STMicroelectronics |
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M24LR16E-R Datasheet(HTML) 138 Page - STMicroelectronics |
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138 / 143 page  Anticollision algorithm (informative) M24LR16E-R 138/143 Doc ID 018932 Rev 8 Appendix A Anticollision algorithm (informative) The following pseudocode describes how anticollision could be implemented on the VCD, using recursivity. A.1 Algorithm for pulsed slots function push (mask, address); pushes on private stack function pop (mask, address); pops from private stack function pulse_next_pause; generates a power pulse function store(M24LR16E-R_UID); stores M24LR16E-R_UID function poll_loop (sub_address_size as integer) pop (mask, address) mask = address & mask; generates new mask ; send the request mode = anticollision send_Request (Request_cmd, mode, mask length, mask value) for sub_address = 0 to (2^sub_address_size - 1) pulse_next_pause if no_collision_is_detected ; M24LR16E-R is inventoried then store (M24LR16E-R_UID) else ; remember a collision was detected push(mask,address) endif next sub_address if stack_not_empty ; if some collisions have been detected and then ; not yet processed, the function calls itself poll_loop (sub_address_size); recursively to process the last stored collision endif end poll_loop main_cycle: mask = null address = null push (mask, address) poll_loop(sub_address_size) end_main_cycle |
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