Hello i'm using Pulpino's SPI Master part to read a external sensor that it is connected to one of the zedboard's pmod. I have configurated the spi_master_clkgen spi_clk polarity to start in 1. I have done the next code to read the sensor's id but I don't get any success:
#include <utils.h>
#include <stdio.h>
#include <spi.h>
#include <bench.h>
int main() {
int sensor_id;
spi_setup_master(1);
*(volatile int*) (SPI_REG_CLKDIV) = 0x2;
spi_setup_cmd_addr( 0x0f, 8,0,0);
spi_set_datalen(8);
spi_start_transaction(SPI_CMD_RD, SPI_CSN0);
spi_read_fifo(&sensor_id, 8);
printf(" LPS25HB sensor id: 0x%x\n", sensor_id);
return 0;
}
Reviewing the signal with a logic a analizer I got this result: SCLK does as many clocks that spi_Reg_clkdiv value is, the chip select when CS is asserted, it remains asserted indefinitely. MOSI only does one pulse and MISO remains idle.
Anyone can help?
#include <utils.h>
#include <stdio.h>
#include <spi.h>
#include <bench.h>
int main() {
int sensor_id;
spi_setup_master(1);
*(volatile int*) (SPI_REG_CLKDIV) = 0x2;
spi_setup_cmd_addr( 0x0f, 8,0,0);
spi_set_datalen(8);
spi_start_transaction(SPI_CMD_RD, SPI_CSN0);
spi_read_fifo(&sensor_id, 8);
printf(" LPS25HB sensor id: 0x%x\n", sensor_id);
return 0;
}
Reviewing the signal with a logic a analizer I got this result: SCLK does as many clocks that spi_Reg_clkdiv value is, the chip select when CS is asserted, it remains asserted indefinitely. MOSI only does one pulse and MISO remains idle.
Anyone can help?