All example programs updated to fit new cp210x.h.

[cp210x.git] / src / examples / cptwiddle.c

diff --git a/src/examples/cptwiddle.c b/src/examples/cptwiddle.c
index 068809eae917818631ba261d8d55f9a2eb538901..5e144eb3d43dc04e2c8c99de8752e57bc55c4227 100644 (file)
--- a/src/examples/cptwiddle.c
+++ b/src/examples/cptwiddle.c
@@ -10,53 +10,22 @@
  *  - Twiddles the LEDs
  *  - Restores the original configuration
  *  - Resets the device again so that the original config is immediately active
- *
- * Watch out; the tty device is hard-coded.
  */
 
+#include <fcntl.h>
+#include <netinet/in.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <fcntl.h>
+#include <unistd.h>
+#include <cp210x.h>
 
-/* CP2103 ioctls */
-#define IOCTL_GPIOGET          0x8000  /* Get gpio bits */
-#define IOCTL_GPIOSET          0x8001  /* Set gpio bits */
-#define IOCTL_GPIOBIC          0x8002  /* Clear specific gpio bit(s) */
-#define IOCTL_GPIOBIS          0x8003  /* Set specific gpio bit(s) */
-
-/* CP210x ioctls principally used during initial device configuration */
-#define IOCTL_DEVICERESET      0x8004  /* Reset the cp210x */
-#define IOCTL_PORTCONFGET      0x8005  /* Get port configuration */
-#define IOCTL_PORTCONFSET      0x8006  /* Set port configuration */
-#define IOCTL_SETVID           0x8007  /* Set vendor id */
-#define IOCTL_SETPID           0x8008  /* Set product id */
-#define IOCTL_SETMFG           0x8009  /* Set manufacturer string */
-#define IOCTL_SETPRODUCT       0x800a  /* Set product string */
-#define IOCTL_SETSERIAL                0x800b  /* Set serial number string */
-#define IOCTL_SETDEVVER                0x800c  /* set device version id */
-/* FIXME: where is IOCTL_SETMFG? */
-
-
-typedef struct {
-    uint16_t mode;
-    uint16_t lowPower;
-    uint16_t latch;
-} cp2103_port_state_t;
-
-typedef struct {
-    cp2103_port_state_t reset;
-    cp2103_port_state_t suspend;
-    uint8_t enhancedFxn;
-} cp2103_port_config_t;
-
-int cpConnect()
+int cpConnect(char* device)
 {
-    int ret, ioval;
-    int fd = open("/dev/usb/tts/0", O_RDWR);
+    int fd = open(device, O_RDWR);
     if (fd < 0) {
        fprintf(stderr, "cannot open tty\n");
        return -1;
@@ -71,20 +40,26 @@ void cpDisconnect(int fd)
        close(fd);
 }
 
-int main()
+int main(int argc, char* argv[])
 {
     int fd;
-    cp2103_port_config_t config;
-    cp2103_port_config_t saveConfig;
+    struct cp210x_port_config config;
+    struct cp210x_port_config saveConfig;
     uint8_t saveGpio;
     int ret;
     int i;
 
-    if ((fd = cpConnect()) < 0)
+    if (argc != 2) {
+       fprintf(stderr, "usage: %s <tty>\n", argv[0]);
+       return 1;
+    }
+
+    /* open */
+    if ((fd = cpConnect(argv[1])) < 0)
        return 1;
 
     /* Read the current port configuration */
-    if ((ret = ioctl(fd, IOCTL_PORTCONFGET, &config))) {
+    if ((ret = ioctl(fd, CP210x_IOCTL_PORTCONFGET, &config))) {
        fprintf(stderr, "portconfget ioctl failed %d\n", ret);
        return 1;
     }
@@ -92,7 +67,7 @@ int main()
     printf("port config received\n");
 
     /* Read the current gpio latches */
-    if ((ret = ioctl(fd, IOCTL_GPIOGET, &saveGpio))) {
+    if ((ret = ioctl(fd, CP210x_IOCTL_GPIOGET, &saveGpio))) {
        fprintf(stderr, "gpioget ioctl failed %d\n", ret);
        return 1;
     }
@@ -103,14 +78,14 @@ int main()
     config.suspend.mode &= ~0x0300;
     config.reset.latch |= 0x0300;
     config.enhancedFxn &= ~0x03;
-    if ((ret = ioctl(fd, IOCTL_PORTCONFSET, &config))) {
+    if ((ret = ioctl(fd, CP210x_IOCTL_PORTCONFSET, &config))) {
        fprintf(stderr, "portconfset ioctl failed %d\n", ret);
        return 1;
     }
     printf("port config altered\n");
 
     /* Reset the part */
-    if ((ret = ioctl(fd, IOCTL_DEVICERESET, 0))) {
+    if ((ret = ioctl(fd, CP210x_IOCTL_DEVICERESET, 0))) {
        fprintf(stderr, "device reset ioctl failed %d\n", ret);
        return 1;
     }
@@ -121,7 +96,7 @@ int main()
     printf("disconnected\n");
     for (i = 0; i < 10; i++) {
        sleep(1);
-       if ((fd = cpConnect()) >= 0)
+       if ((fd = cpConnect(argv[1])) >= 0)
            break;
     }
     if (i == 100) {
@@ -133,7 +108,7 @@ int main()
     /* Now, twiddle some bits */
     for (i = 0; i < 8; i++) {
        uint8_t leds = i & 0x03;
-       if ((ret = ioctl(fd, IOCTL_GPIOSET, leds))) {
+       if ((ret = ioctl(fd, CP210x_IOCTL_GPIOSET, leds))) {
            fprintf(stderr, "gpio set ioctl failed %d\n", ret);
            return 1;
        }
@@ -142,21 +117,21 @@ int main()
     }
 
     /* Restore the original latches */
-    if ((ret = ioctl(fd, IOCTL_GPIOSET, saveGpio))) {
+    if ((ret = ioctl(fd, CP210x_IOCTL_GPIOSET, saveGpio))) {
        fprintf(stderr, "gpio set ioctl failed %d\n", ret);
        return 1;
     }
     printf("gpio latches restored\n");
 
     /* Return the original configuration */
-    if ((ret = ioctl(fd, IOCTL_PORTCONFSET, &saveConfig))) {
+    if ((ret = ioctl(fd, CP210x_IOCTL_PORTCONFSET, &saveConfig))) {
        fprintf(stderr, "portconfset ioctl failed %d\n", ret);
        return 1;
     }
     printf("port config restored\n");
 
     /* Reset the part again */
-    if ((ret = ioctl(fd, IOCTL_DEVICERESET, 0))) {
+    if ((ret = ioctl(fd, CP210x_IOCTL_DEVICERESET, 0))) {
        fprintf(stderr, "device reset ioctl failed %d\n", ret);
        return 1;
     }