Getting wrong data on receive with wiz550io

Question

Good afternoon! I’m interfacing a wiz550io with a msp430 (msp430f2416). I’ve set up SPI on the MSP as follows: MSB 8 bit Clock polarity inactive low Clock phase: Data is captured on the first clock edge and changed on the following edge. speed is ~1MHz my main loop goes approximately like this: RST pin low for ~1 sec RST pin high for ~0.5sec reg_wizchip_spi_cbfunc(spi_readbyte, spi_writebyte); reg_wizchip_cs_cbfunc(spi_cs_on, spi_cs_off); rb = getVERSIONR(); printf(“version nr %x
”, rb); wiz_NetInfo netInfo; wiz_NetInfo netInfo2 = { .mac = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01}, // Mac address .ip = {2, 2, 2, 2}, // IP address .sn = {3, 3, 3, 3}, // Subnet mask .gw = {4, 4, 4, 4}}; // Gateway address wizchip_setnetinfo(&netInfo2); wizchip_getnetinfo(&netInfo); printf(“IP: %i %i %i %i
”, netInfo.ip[0], netInfo.ip[1], netInfo.ip[2], netInfo.ip[3]); My results are: version nr 2 IP: 2 3 0 192 Why is version number wrong? (Should be 0x04) Why are IP numbers way off? SPI is tested to work correctly when i connect MOSI directly to MISO and send various dummy bytes. I’ve scoured this forum and else where and simply do not see what is missing. Hoping for a quick reply! Thanks in advance!

irina · Answer

You should operate the reset operation before link status of wiz550io confirm it. operation is approximately like this: spi_cbfunc → spi initailize → reset operation → confirm the link status → register read/write image651×748 24.9 KB

jallaballa · Answer

Thank you Irina, is it possible to get a link to the code base you have imaged in your reply?