spi mode调试经验

#include <stdint.h> #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <getopt.h> #include <fcntl.h> #include <sys/ioctl.h> #include <linux/types.h> #include <linux/spi/spidev.h> #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) /****************************************************************************/ /* *****************************************************************************/ #define AD_READ (0 << 15) #define AD_WRITE (1 << 15) #define AD_CNT(x) ((((x) - 1) & 0x7) << 12) #define AD_ADDR(x) ((x) & 0x3FF) #define NUM_ALL_REG 2564 #define BBPLL_INDEX 26 #define RX_CPCAL_INDEX 1627 #define TX_CPCAL_INDEX 1629 #define RX_PLL_LOCK_INDEX 1666 #define TX_PLL_LOCK_INDEX 1667 #define RX_FIR_TUNE_INDEX 2455 #define TX_FIR_TUNE_INDEX 2462 #define BBDC_OFFSET_CAL_INDEX 2522 #define MASKED_READ_INDEX 2530 #define TX_QUAD_CAL_INDEX 2543 #define DELAY_20MS_INDEX 9 #define DELAY_1MS_INDEX 1625 #define RFDC_CAL_TIME_INDEX 2529 #define DCXO_ENA_INDEX 3 #define LVDS_ENA_INDEX 1576 uint32_t ad9361_spi_readm(int fd,uint32_t reg, uint8_t *rbuf); uint32_t ad9361_spi_write(int fd,uint32_t reg, uint32_t val); int ad9361_read_write(int fd); /* * structure used at regsitration */ typedef struct { uint32_t regaddr; //request irq pin number uint32_t value; //process id to notify } ioctl_reg_info; typedef struct { uint32_t RegAddressOk; //request irq pin number uint32_t RegValueOk; //process id to notify } ioctl_reg_info_ok; static void pabort(const char *s) { perror(s); abort(); } static const char *device = "/dev/spidev32766.0"; static uint8_t mode; static uint8_t bits = 8; static uint32_t speed = 500000; static uint16_t delay; static uint32_t regaddr = 0; static ioctl_reg_info reg_info; ioctl_reg_info_ok ok; static void transfer(int fd) { int ret; #if 1 uint8_t tx[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x40, 0x00, 0x00, 0x00, 0x00, 0x95, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xDE, 0xAD, 0xBE, 0xEF, 0xBA, 0xAD, 0xF0, 0x0D, }; #else #endif uint8_t rx[ARRAY_SIZE(tx)] = {0, }; struct spi_ioc_transfer tr = { .tx_buf = (unsigned long)tx, //发送缓存区 .rx_buf = (unsigned long)rx, //接收缓存区 .len = ARRAY_SIZE(tx), .delay_usecs = delay, //发送时间间隔 .speed_hz = speed, //总线速率 .bits_per_word = bits, //收发的一个字的二进制位数 }; ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); if (ret < 1) pabort("can't send spi message"); for (ret = 0; ret < ARRAY_SIZE(tx); ret++) { if (!(ret % 6)) puts(""); printf("%.2X ", rx[ret]); } puts(""); } static void transfer_ad9361(int fd,uint8_t *buf) { int ret,i; uint8_t tx[2]; for(i=0;i<2;i++){ tx[i]=buf[i]; } uint8_t rx[ARRAY_SIZE(tx)] = {0, }; struct spi_ioc_transfer tr = { .tx_buf = (unsigned long)buf, //发送缓存区 .rx_buf = (unsigned long)rx, //接收缓存区 .len = ARRAY_SIZE(tx), .delay_usecs = delay, //发送时间间隔 .speed_hz = speed, //总线速率 .bits_per_word = bits, //收发的一个字的二进制位数 }; ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); if (ret < 1) pabort("can't send spi message"); /* for (ret = 0; ret < ARRAY_SIZE(tx); ret++) { if (!(ret % 6)) puts(""); printf("%.2X ", rx[ret]); } puts(""); */ } static void print_usage(const char *prog) { printf("Usage: %s [-DsbdlHOLC3]\n", prog); puts(" -D --device device to use (default /dev/spidev1.1)\n" " -s --speed max speed (Hz)\n" " -d --delay delay (usec)\n" " -b --bpw bits per word \n" " -l --loop loopback\n" " -H --cpha clock phase\n" " -O --cpol clock polarity\n" " -L --lsb least significant bit first\n" " -C --cs-high chip select active high\n" " -3 --3wire SI/SO signals shared\n" " -r --reg read reg value\n"); exit(1); } static void parse_opts(int argc, char *argv[]) { while (1) { static const struct option lopts[] = { { "device", 1, 0, 'D' }, { "speed", 1, 0, 's' }, { "delay", 1, 0, 'd' }, { "bpw", 1, 0, 'b' }, { "loop", 0, 0, 'l' }, { "cpha", 0, 0, 'H' }, { "cpol", 0, 0, 'O' }, { "lsb", 0, 0, 'L' }, { "cs-high", 0, 0, 'C' }, { "3wire", 0, 0, '3' }, { "no-cs", 0, 0, 'N' }, { "ready", 0, 0, 'R' }, { "reg", 1, 0, 'r' }, { "reg", 1, 0, 'w' }, { NULL, 0, 0, 0 }, }; int c; c = getopt_long(argc, argv, "D:s:d:b:r:w:lHOLC3NR", lopts, NULL); if (c == -1) break; switch (c) { case 'D': device = optarg; break; case 's': speed = atoi(optarg); break; case 'd': delay = atoi(optarg); break; case 'b': bits = atoi(optarg); break; case 'l': mode |= SPI_LOOP; break; case 'H': mode |= SPI_CPHA; break; case 'O': mode |= SPI_CPOL; break; case 'L': mode |= SPI_LSB_FIRST; break; case 'C': mode |= SPI_CS_HIGH; break; case '3': mode |= SPI_3WIRE; break; case 'N': mode |= SPI_NO_CS; break; case 'R': mode |= SPI_READY; break; case 'r': printf("line:%d\n",__LINE__); regaddr = atoi(optarg); reg_info.regaddr = regaddr ; ok.RegAddressOk=1; break; case 'w': printf("line:%d\n",__LINE__); reg_info.value = atoi(optarg); ok.RegValueOk=1; break; default: print_usage(argv[0]); break; } } } int main(int argc, char *argv[]) { int ret = 0; int fd; char action[256]; memset(&reg_info,'0',sizeof(reg_info)); parse_opts(argc, argv); fd = open(device, O_RDWR); if (fd < 0) pabort("can't open device"); /* * spi mode */ ret = ioctl(fd, SPI_IOC_WR_MODE, &mode); if (ret == -1) pabort("can't set spi mode"); ret = ioctl(fd, SPI_IOC_RD_MODE, &mode); if (ret == -1) pabort("can't get spi mode"); /* * bits per word */ ret = ioctl(fd, SPI_IOC_WR_BITS_PER_WORD, &bits); if (ret == -1) pabort("can't set bits per word"); ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits); if (ret == -1) pabort("can't get bits per word"); /* * max speed hz */ ret = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, &speed); if (ret == -1) pabort("can't set max speed hz"); ret = ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, &speed); if (ret == -1) pabort("can't get max speed hz"); printf("app input reg addr=%d\n",regaddr); if(ok.RegAddressOk == 1 && ok.RegValueOk != 1){ printf("reg addr:%d\n",regaddr); ret = ioctl(fd, SPI_IOC_READ_REG, &regaddr); if (ret == -1) pabort("app can't get reg value"); else{ printf("app reg value=0x%X\n",regaddr); } } else if(ok.RegAddressOk == 1 && ok.RegValueOk == 1){ printf("reg addr:%d,value:%d\n",reg_info.regaddr,reg_info.value); ret = ioctl(fd, SPI_IOC_WRITE_REG, &reg_info); if (ret == -1) pabort("app can't get reg value"); }else{ // transfer(fd); ad9361_read_write(fd); } printf("spi mode: %d\n", mode); printf("bits per word: %d\n", bits);