usbcom go rewrite

1 files changed, 0 insertions, 194 deletions

diff --git a/sw/usbcom/usbcom.c b/sw/usbcom/usbcom.c
deleted file mode 100644
index a374875..0000000
--- a/sw/usbcom/usbcom.c
+++ /dev/null
@@ -1,194 +0,0 @@
-#include <assert.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include <libusb-1.0/libusb.h>
-
-#define TIMEOUT_MS 5000
-
-#define BUF_SIZE 512
-
-#define INTERFACE 0
-
-enum {
-	VENDOR_ID = 0x04d8,
-	PRODUCT_ID = 0x000a,
-};
-
-enum {
-	SET_LINE_CODING = 0x20,
-	SET_CONTROL_LINE_STATE = 0x22,
-};
-
-enum {
-	ACM_CTRL_DTR = 0x01,
-	ACM_CTRL_RTS = 0x02,
-};
-
-enum {
-	EP_OUT_ADDR = 0x02,
-	EP_IN_ADDR = 0x82,
-};
-
-// line encoding: 9600 8N1
-// 9600 = 0x2580 LE
-static unsigned char encoding[] = {0x80, 0x25, 0x00, 0x00, 0x00, 0x00, 0x08};
-
-// Returns NULL on error
-static libusb_device_handle *
-setup(void) {
-	int res;
-	libusb_device_handle *devh;
-
-	res = libusb_init_context(NULL, NULL, 0);
-	if (res < 0) {
-		fprintf(stderr, "Error initializing libusb: %s\n", libusb_strerror(res));
-		return NULL;
-	}
-
-	devh = libusb_open_device_with_vid_pid(NULL, VENDOR_ID, PRODUCT_ID);
-	if (!devh) {
-		fprintf(stderr, "Error finding USB device\n");
-		return NULL;
-	}
-
-	res = libusb_claim_interface(devh, INTERFACE);
-	if (res < 0) {
-		fprintf(stderr, "Failed to claim interface: %s\n", libusb_strerror(res));
-		libusb_close(devh);
-		return NULL;
-	}
-
-	res = libusb_control_transfer(devh, 0x21, SET_CONTROL_LINE_STATE, ACM_CTRL_DTR | ACM_CTRL_RTS, 0, NULL, 0, TIMEOUT_MS);
-	if (res < 0) {
-		fprintf(stderr, "Error during control transfer: %s\n", libusb_strerror(res));
-		libusb_close(devh);
-		return NULL;
-	}
-
-	res = libusb_control_transfer(devh, 0x21, SET_LINE_CODING, 0, 0, encoding, sizeof(encoding), TIMEOUT_MS);
-	if (res < 0) {
-		fprintf(stderr, "Error during control transfer: %s\n", libusb_strerror(res));
-		libusb_close(devh);
-		return NULL;
-	}
-
-	return devh;
-}
-
-static void
-teardown(libusb_device_handle *devh) {
-	libusb_release_interface(devh, INTERFACE);
-	libusb_close(devh);
-	libusb_exit(NULL);
-}
-
-// Send bytes to USB
-static void
-txChars(libusb_device_handle *devh, unsigned char *data, int n) {
-	int actualLen, res;
-
-	actualLen = 0;
-	while (actualLen < n) {
-		res = libusb_bulk_transfer(devh, EP_OUT_ADDR, data, n, &actualLen, TIMEOUT_MS);
-		if (res == LIBUSB_ERROR_TIMEOUT) {
-			printf("Tx timeout (%d)\n", actualLen);
-		} else if (res < 0) {
-			fprintf(stderr, "Tx error: %s\n", libusb_strerror(res));
-		}
-		assert(actualLen <= n);
-		n -= actualLen;
-		data += actualLen;
-	}
-}
-
-// Read data from USB
-// Returns number of bytes read, or -1 on error
-static int
-rxChars(libusb_device_handle *devh, unsigned char *data, int size) {
-	int res, len;
-
-	res = libusb_bulk_transfer(devh, EP_IN_ADDR, data, size, &len, TIMEOUT_MS);
-	if (res == LIBUSB_ERROR_TIMEOUT) {
-		fprintf(stderr, "Rx timeout\n");
-		return -1;
-	} else if (res < 0) {
-		fprintf(stderr, "Rx error: %s\n", libusb_strerror(res));
-		return -1;
-	}
-	return len;
-}
-
-// Get line from stdin
-// Includes '\n'
-// Returns number of chars prior to NUL, or EOF on end of file or error
-static int
-scanline(char *buf, size_t size) {
-	int c, n;
-
-	c = '\0';
-	n = 0;
-	while (n+1 < size) {
-		c = getchar();
-		if (c == EOF) {
-			break;
-		}
-		buf[n++] = c;
-		if (c == '\n') {
-			break;
-		}
-	}
-
-	if (size > 0) {
-		buf[n] = '\0';
-	}
-
-	return ((c == EOF) && (n < 1)) ? EOF : n;
-}
-
-static void
-sendCommand(libusb_device_handle *devh) {
-	unsigned char buf[BUF_SIZE];
-	int len;
-
-	while ((len = scanline(buf, sizeof(buf))) != EOF) {
-		txChars(devh, buf, len);
-		if (len > 0 && buf[len-1] == '\n') {
-			break;
-		}
-	}
-}
-
-static void
-printResponse(libusb_device_handle *devh) {
-	unsigned char buf[BUF_SIZE];
-	int len;
-
-	while ((len = rxChars(devh, buf, sizeof(buf)-1)) >= 0) {
-		buf[len] = '\0';
-		printf("%s", buf);
-		if (len > 0 && buf[len-1] == '\n') {
-			return;
-		}
-	}
-}
-
-int
-main(int argc, char *argv[]) {
-	libusb_device_handle *devh;
-
-	devh = setup();
-	if (!devh) {
-		return 1;
-	}
-
-	for (;;) {
-		sendCommand(devh);
-		printResponse(devh);
-	}
-
-	teardown(devh);
-	return 0;
-}