From: Antonio Ospite Date: Sat, 7 Jan 2012 01:53:08 +0000 (+0100) Subject: Add initial support for USB output communication X-Git-Tag: v0.1.0~36 X-Git-Url: https://git.ao2.it/libam7xxx.git/commitdiff_plain/c880098b282d3214882535c181f59497747da440?ds=inline Add initial support for USB output communication --- diff --git a/picoproj.c b/picoproj.c index 161be49..a5e5075 100644 --- a/picoproj.c +++ b/picoproj.c @@ -28,6 +28,13 @@ #include #include +#include + +#define AM7x01_VENDOR_ID 0x1de1 +#define AM7x01_PRODUCT_ID 0xc101 + +static libusb_device_handle *dev; + typedef enum { AM7x01_PACKET_TYPE_INIT = 0x01, AM7x01_PACKET_TYPE_IMAGE = 0x02, @@ -154,7 +161,18 @@ static void dump_buffer(uint8_t *buffer, unsigned int len) static int send_data(uint8_t *buffer, unsigned int len) { + int ret; + int transferred; + dump_buffer(buffer, len); + + ret = libusb_bulk_transfer(dev, 1, buffer, len, &transferred, 0); + if (ret != 0 || (unsigned int)transferred != len) { + fprintf(stderr, "Error: ret: %d\ttransferred: %d (expected %u)\n", + ret, transferred, len); + return ret; + } + return 0; } @@ -292,6 +310,22 @@ int main(int argc, char *argv[]) } } + libusb_init(NULL); + libusb_set_debug(NULL, 3); + + dev = libusb_open_device_with_vid_pid(NULL, + AM7x01_VENDOR_ID, + AM7x01_PRODUCT_ID); + if (dev == NULL) { + errno = ENODEV; + perror("libusb_open_device_with_vid_pid"); + exit_code = EXIT_FAILURE; + goto out_libusb_exit; + } + + libusb_set_configuration(dev, 1); + libusb_claim_interface(dev, 0); + ret = send_image(format, width, height, image, size); if (ret < 0) { perror("send_image"); @@ -302,6 +336,11 @@ int main(int argc, char *argv[]) exit_code = EXIT_SUCCESS; cleanup: + libusb_close(dev); + +out_libusb_exit: + libusb_exit(NULL); + if (image != NULL) { ret = munmap(image, size); if (ret < 0)