Changes in progress to support debian (ubuntu) integration

[cp210x.git] / examples / cptwiddle.c

diff --git a/examples/cptwiddle.c b/examples/cptwiddle.c
deleted file mode 100644 (file)
index 068809e..0000000
--- a/examples/cptwiddle.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/**
- * cptwiddle.c
- *
- * Twiddle the leds connected to the cp2103's GPIO_0 and GPIO_1 pins on the
- * USB device.  Twiddle does the following:
- *
- *  - Saves the current latch and port config settings
- *  - Reconfigures for leds as IO
- *  - Resets the device and reconnects to it
- *  - 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 <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.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 ret, ioval;
-    int fd = open("/dev/usb/tts/0", O_RDWR);
-    if (fd < 0) {
-       fprintf(stderr, "cannot open tty\n");
-       return -1;
-    }
-    printf("tty opened\n");
-    return fd;
-}
-
-void cpDisconnect(int fd)
-{
-    if (fd >= 0)
-       close(fd);
-}
-
-int main()
-{
-    int fd;
-    cp2103_port_config_t config;
-    cp2103_port_config_t saveConfig;
-    uint8_t saveGpio;
-    int ret;
-    int i;
-
-    if ((fd = cpConnect()) < 0)
-       return 1;
-
-    /* Read the current port configuration */
-    if ((ret = ioctl(fd, IOCTL_PORTCONFGET, &config))) {
-       fprintf(stderr, "portconfget ioctl failed %d\n", ret);
-       return 1;
-    }
-    memcpy(&saveConfig, &config, sizeof(config));
-    printf("port config received\n");
-
-    /* Read the current gpio latches */
-    if ((ret = ioctl(fd, IOCTL_GPIOGET, &saveGpio))) {
-       fprintf(stderr, "gpioget ioctl failed %d\n", ret);
-       return 1;
-    }
-    printf("saved gpio latches 0x%02x\n", saveGpio);
-
-    /* Set the current port configuration; set GPIO_0 and GPIO_1 as outputs */
-    config.reset.mode &= ~0x0300;
-    config.suspend.mode &= ~0x0300;
-    config.reset.latch |= 0x0300;
-    config.enhancedFxn &= ~0x03;
-    if ((ret = ioctl(fd, 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))) {
-       fprintf(stderr, "device reset ioctl failed %d\n", ret);
-       return 1;
-    }
-    printf("device reset\n");
-
-    /* Disconnect then reconnect */
-    cpDisconnect(fd);
-    printf("disconnected\n");
-    for (i = 0; i < 10; i++) {
-       sleep(1);
-       if ((fd = cpConnect()) >= 0)
-           break;
-    }
-    if (i == 100) {
-       printf("failed to reconnect\n");
-       return 1;
-    }
-    printf("reconnected\n");
-
-    /* Now, twiddle some bits */
-    for (i = 0; i < 8; i++) {
-       uint8_t leds = i & 0x03;
-       if ((ret = ioctl(fd, IOCTL_GPIOSET, leds))) {
-           fprintf(stderr, "gpio set ioctl failed %d\n", ret);
-           return 1;
-       }
-       printf("set leds %u\n", leds);
-       sleep(1);
-    }
-
-    /* Restore the original latches */
-    if ((ret = ioctl(fd, 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))) {
-       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))) {
-       fprintf(stderr, "device reset ioctl failed %d\n", ret);
-       return 1;
-    }
-    printf("device reset again\n");
-
-    cpDisconnect(fd);
-    return 0;
-}