Add info about transfer direction in debug messages, add newline

[libam7xxx.git] / src / am7xxx.c

diff --git a/src/am7xxx.c b/src/am7xxx.c
index 397dc97..90dcc8c 100644 (file)
--- 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));
 }
 
@@ -100,6 +103,7 @@ static int send_data(am7xxx_device dev, uint8_t *buffer, unsigned int len)
        int transferred;
 
 #if DEBUG
+       printf("\nsending -->\n");
        dump_buffer(buffer, len);
        printf("\n");
 #endif
@@ -135,6 +139,7 @@ static int send_header(am7xxx_device dev, struct am7xxx_header *h)
        int ret;
 
 #if DEBUG
+       printf("\n");
        dump_header(h);
        printf("\n");
 #endif
@@ -221,3 +226,56 @@ 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;
+}