Hello, I've configured SPI bus on P0.2 (SCLK), P0.3(MISO), P0.4 (MOSI) and P0.5 (NSS) but on these ports: no signal. Normaly, I should have SPI clock at least but I have nothing.
I've configured :
1) Pins:
sbit SPI_SCLK=P0^2; // SPI clock on P0.2 sbit SPI_MISO=P0^3; // Master In/Slave Out on P0.3 sbit SPI_MOSI=P0^4; // Master Out/Slave In on P0.4 sbit SPI_NSS=P0^5; // Slave Select on P0.5
2) Ports:
void port_init (void) { char sfrpage_save = SFRPAGE; // Save current page of SFR SFRPAGE = CONFIG_PAGE; // Load config_page WDTCN = 0xde; WDTCN = 0xad; // Disable watchdog timer XBR0 = 0x02; // Enable SPI bus XBR1 = 0x00; // Enable /INT0 and /INT1 XBR2 = 0x40; // Enable Crossbar and weak pull-up P0MDOUT |= 0x3C; // P0.5, P0.4, P0.3 and P0.2 are outputs (for SPI datas) P0 = 0x3C; SFRPAGE = sfrpage_save; // Restore SFR page }
3) SPI bus:
void config_SPI (void) { char sfrpage_save = SFRPAGE; // Save current SFR page SFRPAGE = SPI0_PAGE; // Load SPI page SPI0CFG |= 0x40; // Master Mode Enable SPI0CN |= 0x8D; // Slave select and enable SPI SPI0CKR = 0x01; // SYSCLK/2 SFRPAGE = sfrpage_save; // Restore SFR page }
I have tried many times to resolve the problem but without satisfaction for the moment.
If you can help me, make it please. Thanks.
Manu