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Showing results for tags 'rs485'.
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Solar power displayAn output power display for my solar system. G2553 Launchpad, Blue 4-digit LED display, RS485 Transceiver SN65HVD12P (a low power, 3.3V version of the standard SN75176), this is all there is. All pins are used, 4 + 7 for the multiplexed LEDs (no resistors: Blue LED, 3.6V supply, output resistance of the pins limit the LED current) 3 pins for UART and send/receive for the SN65. 2 pins for 32768Hz xtal (I had this one soldered in on the LP, so why not use it) The MSP asks the inverter over RS485/Modbus "what is your current output power". After less than half a se
cc3200 uart Energia application.Hi experts!! I'm a beginner and working on CC3200 LP along with Energia IDE. I'm working on a simple project where I've an external device which has RS485 o/p and I need to fetch the values in specified addr location in that device to CC3200 LP. My doubts are #1) we have external module that has device ID+parameter Address and we need to transmit the value in LP through UART, here I'm not sure how to use the UART function to specifically target device+address and return/get the same.... #2) what I'm looking/exploring is that in above example (UART code which Andy shared here
Modbus RTU on RS485 Master not processing
hspl posted a topic in Energia - TivaC/CC3XXXI am using the Modbus RTU library for Arduino for TIVA TM4c1294ncpdt. Slave(Modbus_Slave Software on PC) is responding to master request but master somekind does not proccess informations that he gets. So I can not regulate LED on master side over potentiometer on slave side. Also master stops sending request to slave after 10 requests sended to slave (when retry_count is set to 5). Problem is: 1) master send request to slave, 2) slave gets request 3) slave process request, 4) slave returns answer to master 5) master gets answer 6) master do not process slave answer After 5 reques