add software reset to UC1701 controller

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From the post about my nokia5110 replacement you might have seen that we have 
also developed another product called 'Industruino' (www.industruino.com) which 
also uses the u8glib.
On that project I had to find ways of limiting the amount of pins that the LCD 
screen and other peripherals took away from the atmega32u4. Therefore I delved 
in the UC1701 datasheet and read that I could tie the reset pin of the lcd to 
vcc, because the uc1701 has an internal reset circuit. I implemented this and 
when verifying my prototypes it seemed to work but sporadically I would have 
screens that didn't work properly. So after lengthy debugging I came to the 
conclusion that in order for the internal reset circuit to work you need to 
call the reset command in software. I added this line to your 
'u8g_dev_uc1701_mini12864.c' in the 'u8g_dev_uc1701_mini12864_init_seq' 
function:    0x0e2,      /* soft reset
After this small modification I haven't had any issues. I was wondering if it 
would be possible to incorporate this change in the next version of u8glib?

the complete init function then looks like this;

Code:
static const uint8_t u8g_dev_uc1701_mini12864_init_seq[] PROGMEM = {
  U8G_ESC_CS(0),             /* disable chip */
  U8G_ESC_ADR(0),           /* instruction mode */
  U8G_ESC_RST(1),           /* do reset low pulse with (1*16)+2 milliseconds */
  U8G_ESC_CS(1),             /* enable chip */

  0x0e2,                /* soft reset
  0x040,                /* set display start line to 0 */
  0x0a0,                /* ADC set to reverse */
  0x0c8,                /* common output mode */
  0x0a6,                /* display normal, bit val 0: LCD pixel off. */
  0x0a2,                /* LCD bias 1/9 */
  0x02f,                /* all power  control circuits on */
  0x0f8,                /* set booster ratio to */
  0x000,                /* 4x */
  0x023,                /* set V0 voltage resistor ratio to large */
  0x081,                /* set contrast */
  0x027,                /* contrast value */
  0x0ac,                /* indicator */
  0x000,                /* disable */
  0x0af,                /* display on */

  U8G_ESC_DLY(100),       /* delay 100 ms */
  0x0a5,                                /* display all points, ST7565 */
  U8G_ESC_DLY(100),       /* delay 100 ms */
  U8G_ESC_DLY(100),       /* delay 100 ms */
  0x0a4,                                /* normal display */
  U8G_ESC_CS(0),             /* disable chip */
  U8G_ESC_END                /* end of sequence */
};

Original issue reported on code.google.com by olikr...@gmail.com on 25 Sep 2013 at 7:35

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added for both uc1701 display devices

Original comment by olikr...@gmail.com on 3 Oct 2013 at 6:36

• Changed state: Started

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verified with DOGS102

Original comment by olikr...@gmail.com on 3 Oct 2013 at 6:38

• Changed state: Verified