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interface between K20D50M with a sensor

Question asked by soso pavliashvilli on Apr 3, 2014
Latest reply on Apr 6, 2014 by Jorge_Gonzalez

Hi all,


I am really new to microcontrollers. I am trying to interface K20D50M with a capacitance sensor. I was wandering if there are any demo projects that I can use.

Here is the serial data format of the capacitance sensor:


The ASCII output from TXD pin of J4 contains three fields: sequence number, measurement time (in seconds), and measured capacitance. The line format is as below.


where ‘SSSSS’is 5 digit sequence number, ‘’is 8 digit time stamp (in second), and CCCCU is 5 digit measured capacitance with U being unit digit. Different fields are separated by 1 space. Each line is ended with ‘LF’(0x0A) and ‘CR’(0x0D). Output baud rate is 38400bps fixed. Data format is 8 data bits, 1 stop bit, and no parity.

Output level is 5V. So a level converter is needed to connect to RS232 compatible device (PC serial port, for example).

Could you please send me If you have any demo projects that would be helpful

Thank you and have a great day