Posted on June 04, 2016 at 16:10
Hi,
I'm trying to initialize the the graphic LCD ST7565R in spi mode the connections are as per the datasheet. Used the 1uf capacitors bw cap2n-cap2p,cap1n-cap1p,cap1n-cap3p,vout-vss,v0-vss,v1-vss,v2-vss,v3-vss,v4-vss. And p/s pin low,IRS pin high ,data pins(D0-D5) high, RD and WR pins high. Initialization code as follows.
spi_tx_command(ST7565R_CMD_ADC_NORMAL); //0xA0
spi_tx_command(ST7565R_CMD_DISPLAY_NORMAL); //0xA6
spi_tx_command(ST7565R_CMD_REVERSE_SCAN_DIRECTION); //0xC8
spi_tx_command(ST7565R_CMD_LCD_BIAS_1_DIV_6_DUTY33); //0xA2
spi_tx_command(ST7565R_CMD_POWER_CTRL_ALL_ON); //0x2F
spi_tx_command(ST7565R_CMD_BOOSTER_RATIO_SET); //0xF8
spi_tx_command(ST7565R_CMD_BOOSTER_RATIO_2X_3X_4X); //0x00
spi_tx_command(ST7565R_CMD_VOLTAGE_RESISTOR_RATIO_1); //0x21
spi_tx_command(ST7565R_CMD_ELECTRONIC_VOLUME_MODE_SET); //0x81
spi_tx_command(ST7565R_DISPLAY_CONTRAST_MAX); //0x28
spi_tx_command(ST7565R_CMD_DISPLAY_ON); //0xAF
still the LCD is not getting initialized ..please some one help me to know what is the problem. spi is working properly because on the same spi I already initialized ili9341 lcd.
LCD pin details are attached in attachments.
#st32f3 #st7565r
