spidev_test: copy the source code into the package folder
authorJohn Crispin <john@phrozen.org>
Thu, 30 Jun 2016 11:05:22 +0000 (13:05 +0200)
committerJohn Crispin <john@phrozen.org>
Thu, 30 Jun 2016 20:48:39 +0000 (22:48 +0200)
Signed-off-by: John Crispin <john@phrozen.org>
package/utils/spidev_test/Makefile
package/utils/spidev_test/src/spidev_test.c [new file with mode: 0644]

index 631ef0d..e92bf63 100644 (file)
@@ -28,20 +28,12 @@ define Package/spidev-test/description
 endef
 
 define Build/Prepare
+       $(CP) src/spidev_test.c $(PKG_BUILD_DIR)/
 endef
 
-# requires 214-spidev_h_portability.patch
-# or linux/ioctl.h include on musl
 define Build/Compile
-
-ifneq ($(CONFIG_LINUX_3_18)$(CONFIG_LINUX_4_1)$(CONFIG_LINUX_4_4),y)
-       $(TARGET_CC) $(TARGET_CFLAGS) -o $(PKG_BUILD_DIR)/spidev_test \
-               $(LINUX_DIR)/tools/spi/spidev_test.c
-else
        $(TARGET_CC) $(TARGET_CFLAGS) -o $(PKG_BUILD_DIR)/spidev_test \
-               $(LINUX_DIR)/Documentation/spi/spidev_test.c
-endif
-
+               $(PKG_BUILD_DIR)/spidev_test.c
 endef
 
 define Package/spidev-test/install
diff --git a/package/utils/spidev_test/src/spidev_test.c b/package/utils/spidev_test/src/spidev_test.c
new file mode 100644 (file)
index 0000000..135b3f5
--- /dev/null
@@ -0,0 +1,318 @@
+/*
+ * SPI testing utility (using spidev driver)
+ *
+ * Copyright (c) 2007  MontaVista Software, Inc.
+ * Copyright (c) 2007  Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * Cross-compile with cross-gcc -I/path/to/cross-kernel/include
+ */
+
+#include <stdint.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.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]))
+
+static void pabort(const char *s)
+{
+       perror(s);
+       abort();
+}
+
+static const char *device = "/dev/spidev1.1";
+static uint32_t mode;
+static uint8_t bits = 8;
+static uint32_t speed = 500000;
+static uint16_t delay;
+static int verbose;
+
+uint8_t default_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,
+       0xF0, 0x0D,
+};
+
+uint8_t default_rx[ARRAY_SIZE(default_tx)] = {0, };
+char *input_tx;
+
+static void hex_dump(const void *src, size_t length, size_t line_size, char *prefix)
+{
+       int i = 0;
+       const unsigned char *address = src;
+       const unsigned char *line = address;
+       unsigned char c;
+
+       printf("%s | ", prefix);
+       while (length-- > 0) {
+               printf("%02X ", *address++);
+               if (!(++i % line_size) || (length == 0 && i % line_size)) {
+                       if (length == 0) {
+                               while (i++ % line_size)
+                                       printf("__ ");
+                       }
+                       printf(" | ");  /* right close */
+                       while (line < address) {
+                               c = *line++;
+                               printf("%c", (c < 33 || c == 255) ? 0x2E : c);
+                       }
+                       printf("\n");
+                       if (length > 0)
+                               printf("%s | ", prefix);
+               }
+       }
+}
+
+/*
+ *  Unescape - process hexadecimal escape character
+ *      converts shell input "\x23" -> 0x23
+ */
+static int unescape(char *_dst, char *_src, size_t len)
+{
+       int ret = 0;
+       char *src = _src;
+       char *dst = _dst;
+       unsigned int ch;
+
+       while (*src) {
+               if (*src == '\\' && *(src+1) == 'x') {
+                       sscanf(src + 2, "%2x", &ch);
+                       src += 4;
+                       *dst++ = (unsigned char)ch;
+               } else {
+                       *dst++ = *src++;
+               }
+               ret++;
+       }
+       return ret;
+}
+
+static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
+{
+       int ret;
+
+       struct spi_ioc_transfer tr = {
+               .tx_buf = (unsigned long)tx,
+               .rx_buf = (unsigned long)rx,
+               .len = len,
+               .delay_usecs = delay,
+               .speed_hz = speed,
+               .bits_per_word = bits,
+       };
+
+       if (mode & SPI_TX_QUAD)
+               tr.tx_nbits = 4;
+       else if (mode & SPI_TX_DUAL)
+               tr.tx_nbits = 2;
+       if (mode & SPI_RX_QUAD)
+               tr.rx_nbits = 4;
+       else if (mode & SPI_RX_DUAL)
+               tr.rx_nbits = 2;
+       if (!(mode & SPI_LOOP)) {
+               if (mode & (SPI_TX_QUAD | SPI_TX_DUAL))
+                       tr.rx_buf = 0;
+               else if (mode & (SPI_RX_QUAD | SPI_RX_DUAL))
+                       tr.tx_buf = 0;
+       }
+
+       ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr);
+       if (ret < 1)
+               pabort("can't send spi message");
+
+       if (verbose)
+               hex_dump(tx, len, 32, "TX");
+       hex_dump(rx, len, 32, "RX");
+}
+
+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"
+            "  -v --verbose  Verbose (show tx buffer)\n"
+            "  -p            Send data (e.g. \"1234\\xde\\xad\")\n"
+            "  -N --no-cs    no chip select\n"
+            "  -R --ready    slave pulls low to pause\n"
+            "  -2 --dual     dual transfer\n"
+            "  -4 --quad     quad transfer\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' },
+                       { "dual",    0, 0, '2' },
+                       { "verbose", 0, 0, 'v' },
+                       { "quad",    0, 0, '4' },
+                       { NULL, 0, 0, 0 },
+               };
+               int c;
+
+               c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24p:v", 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 'v':
+                       verbose = 1;
+                       break;
+               case 'R':
+                       mode |= SPI_READY;
+                       break;
+               case 'p':
+                       input_tx = optarg;
+                       break;
+               case '2':
+                       mode |= SPI_TX_DUAL;
+                       break;
+               case '4':
+                       mode |= SPI_TX_QUAD;
+                       break;
+               default:
+                       print_usage(argv[0]);
+                       break;
+               }
+       }
+       if (mode & SPI_LOOP) {
+               if (mode & SPI_TX_DUAL)
+                       mode |= SPI_RX_DUAL;
+               if (mode & SPI_TX_QUAD)
+                       mode |= SPI_RX_QUAD;
+       }
+}
+
+int main(int argc, char *argv[])
+{
+       int ret = 0;
+       int fd;
+       uint8_t *tx;
+       uint8_t *rx;
+       int size;
+
+       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_MODE32, &mode);
+       if (ret == -1)
+               pabort("can't set spi mode");
+
+       ret = ioctl(fd, SPI_IOC_RD_MODE32, &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("spi mode: 0x%x\n", mode);
+       printf("bits per word: %d\n", bits);
+       printf("max speed: %d Hz (%d KHz)\n", speed, speed/1000);
+
+       if (input_tx) {
+               size = strlen(input_tx+1);
+               tx = malloc(size);
+               rx = malloc(size);
+               size = unescape((char *)tx, input_tx, size);
+               transfer(fd, tx, rx, size);
+               free(rx);
+               free(tx);
+       } else {
+               transfer(fd, default_tx, default_rx, sizeof(default_tx));
+       }
+
+       close(fd);
+
+       return ret;
+}