X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/5e7d217e7f1d40fbfb6bc6375421a21bd5572788..ad32c9df36e8ec1c5b336bdad10ae771298b4d39:/src/am7xxx.c

diff --git a/src/am7xxx.c b/src/am7xxx.c
index 182ea27..7bd4a2c 100644
--- a/src/am7xxx.c
+++ b/src/am7xxx.c
@@ -26,30 +26,27 @@
 #define AM7XXX_VENDOR_ID  0x1de1
 #define AM7XXX_PRODUCT_ID 0xc101
 
-#if 1
-static uint8_t reference_image_header[] = {
-	0x02, 0x00, 0x00, 0x00,
-	0x00,
-	0x10,
-	0x3e,
-	0x10,
-	0x01, 0x00, 0x00, 0x00,
-	0x20, 0x03, 0x00, 0x00,
-	0xe0, 0x01, 0x00, 0x00,
-	0x53, 0xE8, 0x00, 0x00
-};
-#endif
-
 static void dump_image_header(struct am7xxx_image_header *i)
 {
 	if (i == NULL)
 		return;
 
 	printf("Image header:\n");
-	printf("format:      0x%08x (%u)\n", i->format, i->format);
-	printf("width:       0x%08x (%u)\n", i->width, i->width);
-	printf("height:      0x%08x (%u)\n", i->height, i->height);
-	printf("image size:  0x%08x (%u)\n", i->image_size, i->image_size);
+	printf("\tformat:     0x%08x (%u)\n", i->format, i->format);
+	printf("\twidth:      0x%08x (%u)\n", i->width, i->width);
+	printf("\theight:     0x%08x (%u)\n", i->height, i->height);
+	printf("\timage size: 0x%08x (%u)\n", i->image_size, i->image_size);
+}
+
+static void dump_power_header(struct am7xxx_power_header *p)
+{
+	if (p == NULL)
+		return;
+
+	printf("Power header:\n");
+	printf("\tbit2: 0x%08x (%u)\n", p->bit2, p->bit2);
+	printf("\tbit1: 0x%08x (%u)\n", p->bit1, p->bit1);
+	printf("\tbit0: 0x%08x (%u)\n", p->bit0, p->bit0);
 }
 
 static void dump_header(struct am7xxx_header *h)
@@ -68,6 +65,10 @@ static void dump_header(struct am7xxx_header *h)
 		dump_image_header(&(h->header_data.image));
 		break;
 
+	case AM7XXX_PACKET_TYPE_POWER:
+		dump_power_header(&(h->header_data.power));
+		break;
+
 	default:
 		printf("Packet type not supported!\n");
 		break;
@@ -78,6 +79,8 @@ static void dump_header(struct am7xxx_header *h)
 
 static inline unsigned int in_80chars(unsigned int i)
 {
+	/* The 3 below is the length of "xx " where xx is the hex string
+	 * representation of a byte */
 	return ((i+1) % (80/3));
 }
 
@@ -99,7 +102,10 @@ static int send_data(am7xxx_device dev, uint8_t *buffer, unsigned int len)
 	int ret;
 	int transferred;
 
+#if DEBUG
 	dump_buffer(buffer, len);
+	printf("\n");
+#endif
 
 	ret = libusb_bulk_transfer(dev, 1, buffer, len, &transferred, 0);
 	if (ret != 0 || (unsigned int)transferred != len) {
@@ -131,6 +137,11 @@ static int send_header(am7xxx_device dev, struct am7xxx_header *h)
 	uint8_t *buffer;
 	int ret;
 
+#if DEBUG
+	dump_header(h);
+	printf("\n");
+#endif
+
 	buffer = calloc(AM7XXX_HEADER_WIRE_SIZE, 1);
 	if (buffer == NULL) {
 		perror("calloc buffer");
@@ -204,12 +215,6 @@ int am7xxx_send_image(am7xxx_device dev,
 		},
 	};
 
-	dump_header(&h);
-	printf("\n");
-
-	printf("Dump Buffers\n");
-	dump_buffer(reference_image_header, sizeof(struct am7xxx_header));
-
 	ret = send_header(dev, &h);
 	if (ret < 0)
 		return ret;
@@ -219,3 +224,56 @@ int am7xxx_send_image(am7xxx_device dev,
 
 	return send_data(dev, image, size);
 }
+
+int am7xxx_set_power_mode(am7xxx_device dev, am7xxx_power_mode mode)
+{
+	int ret;
+	struct am7xxx_header h = {
+		.packet_type     = AM7XXX_PACKET_TYPE_POWER,
+		.unknown0        = 0x00,
+		.header_data_len = sizeof(struct am7xxx_power_header),
+		.unknown2        = 0x3e,
+		.unknown3        = 0x10,
+	};
+
+	switch(mode) {
+	case AM7XXX_POWER_OFF:
+		h.header_data.power.bit2 = 0;
+		h.header_data.power.bit1 = 0;
+		h.header_data.power.bit0 = 0;
+		break;
+
+	case AM7XXX_POWER_LOW:
+		h.header_data.power.bit2 = 0;
+		h.header_data.power.bit1 = 0;
+		h.header_data.power.bit0 = 1;
+
+	case AM7XXX_POWER_MIDDLE:
+		h.header_data.power.bit2 = 0;
+		h.header_data.power.bit1 = 1;
+		h.header_data.power.bit0 = 0;
+		break;
+
+	case AM7XXX_POWER_HIGH:
+		h.header_data.power.bit2 = 0;
+		h.header_data.power.bit1 = 1;
+		h.header_data.power.bit0 = 1;
+		break;
+
+	case AM7XXX_POWER_TURBO:
+		h.header_data.power.bit2 = 1;
+		h.header_data.power.bit1 = 0;
+		h.header_data.power.bit0 = 0;
+		break;
+
+	default:
+		fprintf(stderr, "Unsupported power mode.\n");
+		return -EINVAL;
+	};
+
+	ret = send_header(dev, &h);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}