Method for burning data into tire pressure monitoring device

摘要

A method for burning data into a tire pressure monitoring device includes the steps of preparing a burning tool and a tire pressure monitoring device and connecting them electrically with a single wire to enable data or signal transmission between the burning tool and the tire pressure monitoring device, thereby achieving single-wire data burning and two-way communication between the burning tool and the tire pressure monitoring device.

主权项

1. A method for burning data into a tire pressure monitoring device, comprising the steps of:
S1: preparing a burning tool and a tire pressure monitoring device, wherein the burning tool has a first microprocessor and a first memory unit, the first microprocessor is electrically connected to the first memory unit, and the first memory unit has a clock calculation program and to-be-written data; and wherein the tire pressure monitoring device has a second microprocessor, a second memory unit, and a register, and the second microprocessor is separately and electrically connected to the second memory unit and the register; S2: electrically connecting the first microprocessor of the burning tool to the second microprocessor of the tire pressure monitoring device by only one wire, wherein each of the burning tool and the tire pressure monitoring device has a ground line; S3: transmitting a reset instruction to the second microprocessor of the tire pressure monitoring device by the first microprocessor of the burning tool in order to switch the second microprocessor from an execution mode to an error detection mode; S4: transmitting a clock instruction to the second microprocessor by the first microprocessor in order for the second microprocessor to generate a predetermined pulse signal according to the clock instruction and send the predetermined pulse signal to the first microprocessor, for the clock calculation program of the first microprocessor to calculate the predetermined pulse signal and thereby obtain a working clock of the second microprocessor, and for the first microprocessor to perform subsequent steps according to the working clock; S5: transmitting a state instruction to the second microprocessor by the first microprocessor in order for the second microprocessor to send a busy signal or a wait signal to the first microprocessor according to the state instruction, and for the first microprocessor to continue performing the step S5 upon receiving the busy signal and perform a step S6 upon receiving the wait signal; S6: generating a write-in instruction and transmitting the write-in instruction to the second microprocessor, by the first microprocessor upon receiving the wait signal, so that the second microprocessor is switched to a to-be-written-into state according to the write-in instruction and points to a starting position in the second memory unit where data are to be written; S7: transmitting the to-be-written data in the first memory unit to the second microprocessor by the first microprocessor, and starting a writing operation of the first microprocessor according to the starting position in the second memory unit of the second microprocessor where data are to be written; S8: generating an inquiry instruction and transmitting the inquiry instruction to the second microprocessor, by the first microprocessor after performing the writing operation on the second memory unit of the second microprocessor for a predetermined data length, in order for the second microprocessor to send a response signal to the first microprocessor, for the first microprocessor to determine according to a voltage level of the response signal whether the to-be-written data have been written completely into the second memory unit, for the first microprocessor to perform a step S9 when determining according to the response signal that the to-be-written data have not been written completely into the second memory unit, and for the first microprocessor to perform a step S10 when determining according to the response signal that the to-be-written data have been written completely into the second memory unit; S9: generating a forced interrupt instruction and transmitting the forced interrupt instruction to the second microprocessor, by the first microprocessor, so that the writing operation performed by the first microprocessor on the second memory unit of the second microprocessor is forced to stop and a step S11 is performed; S10: generating an ending instruction and transmitting the ending instruction to the second microprocessor, by the first microprocessor, in order for the second microprocessor to terminate the to-be-written-into state according to the ending instruction; and S11: generating a restoring instruction and transmitting the restoring instruction to the second microprocessor, by the first microprocessor, in order to restore the second microprocessor from the error detection mode to the execution mode.