Silentium Posted March 25, 2009 Report Share Posted March 25, 2009 Hi everyone! I'm woking with evalboard EVAL-AD5764EB from Analog Devices. I connected it with my PC by RS232. Data is written to the evalboard in a 24-bit word format. I try to solve this task by using VISA, but each data-bit from 24-bit word written to evalboard in ASCII format and nothing . How I can send 24-bit word from PC by RS232 to evalboard in non-ASCII format? Quote Link to comment
levin.hua Posted March 27, 2009 Report Share Posted March 27, 2009 It maybe because PC RS232 logic level is different to your IC. As i know, if you wanna connect PC Serial port to other device(not pc) you may through MAX232 or sp3232 to change level. PC serial port voltage range is -12V to +12V, MCU voltage range is 0 to 5V. Quote Link to comment
Silentium Posted March 27, 2009 Author Report Share Posted March 27, 2009 But how I can get full control under COM-port and send data continuously (without any system commands)? Quote Link to comment
levin.hua Posted March 28, 2009 Report Share Posted March 28, 2009 i saw your post also in NI forum. you may need a SPI controller(NI8451). and when you installed 8451 driver you can send command whatever you want. Quote Link to comment
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