Start OLED support for ana-digi

[metawatch.git] / metawatch.c

diff --git a/metawatch.c b/metawatch.c
index f4ad1d1f09277230c473f3bc5761089bcf94dff4..348140a49c52920e068a876c190cc1a2f3410c98 100644 (file)
--- a/metawatch.c
+++ b/metawatch.c
@@ -182,6 +182,47 @@ void mw_write_buffer(int mw_fd,
        mw_send_frame(mw_fd, MW_WRITE_BUFFER, (mode & 0x0f) | (((numlines & 0x01)<< 4) & 0x10), mdata, numlines ? 13 : 26);
 }
 
+/*
+   Options:
+       B0   : row select, 0 first row, 1 second row
+       B1   : display select, 0 upper OLED, 1 lower OLED
+       B2   : if 1 send an event upon completion
+       B3..4: scroll type,
+       B5..7: unused
+   Scroll types:
+       B0: First buffer in a chain of scroll buffers
+       B1: Any buffer except first or last
+       B2: Last buffer of a chain
+       B3: reserved / unused
+   Payload:
+       0: Start index col
+       1..: data
+*/
+void mw_write_oled_buffer(int mw_fd,
+       unsigned char mode, /* idle or scroll */
+       unsigned char oled, /* which OLED */
+       unsigned char numcols,
+       unsigned char col_index, /* starting index */
+       unsigned char *buffer, int buflen)
+{
+       unsigned char mdata[32];
+       int i;
+       
+       /* lower row first since display wil be updated after completion of upper row */
+       if (buflen > 80) {
+               for (i=80; i<buflen; i+=20) {
+                       mdata[0] = (i-80);
+                       memcpy((mdata+1), (buffer+i), 20);
+                       mw_send_frame(mw_fd, MW_WRITE_OLED_IDLE_DISPLAY_MSG, 0 | (oled ? 2 : 0), mdata, 21);
+               }
+       }
+       for (i=0; i<80; i+=20) {
+               mdata[0] = i;
+               memcpy((mdata+1), (buffer+i), 20);
+               mw_send_frame(mw_fd, MW_WRITE_OLED_IDLE_DISPLAY_MSG, 1 | (oled ? 2 : 0), mdata, 21);
+       }
+}
+
 void mw_enable_button(int mw_fd,
                unsigned char mode,
                unsigned char button_index,