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nrf5/drivers: Adding preliminary file for ili9341 lcd driver.

This commit is contained in:
Glenn Ruben Bakke 2017-01-05 21:57:59 +01:00
parent 042e3653cf
commit 62c3f9c1e3
3 changed files with 206 additions and 0 deletions
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195
nrf5/drivers/display/lcd_ili9341_driver.c
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@ -24,10 +24,205 @@
* THE SOFTWARE.
*/
#include "py/mphal.h"
#include "lcd_ili9341_driver.h"
#include "hal_spi.h"
#include "hal_time.h"
#if MICROPY_PY_DISPLAY_LCD_ILI9341
static pin_obj_t * mp_cs_pin;
static pin_obj_t * mp_dc_pin;
static NRF_SPI_Type * mp_instance;
static void raw_write(uint8_t value)
{
hal_spi_master_tx_rx(mp_instance, 1, &value, NULL);
}
static void cmd_write(uint8_t value)
{
mp_hal_pin_low(mp_dc_pin);
mp_hal_pin_low(mp_cs_pin);
hal_spi_master_tx_rx(mp_instance, 1, &value, NULL);
mp_hal_pin_low(mp_cs_pin);
}
static void data_write(uint8_t value)
{
mp_hal_pin_high(mp_dc_pin);
mp_hal_pin_low(mp_cs_pin);
hal_spi_master_tx_rx(mp_instance, 1, &value, NULL);
mp_hal_pin_low(mp_cs_pin);
}
void driver_ili9341_init(NRF_SPI_Type * p_instance, pin_obj_t * p_cs_pin, pin_obj_t * p_dc_pin)
{
mp_instance = p_instance;
mp_cs_pin = p_cs_pin;
mp_dc_pin = p_dc_pin;
// mp_hal_pin_high(enable_pin);
// mp_hal_pin_high(backlight_pin);
mp_hal_pin_high(mp_cs_pin);
mp_hal_pin_high(mp_dc_pin);
// Read driver id
mp_hal_delay_ms(500);
cmd_write(0x01);
mp_hal_delay_ms(200);
cmd_write(0xCF);
data_write(0x00);
data_write(0x8B);
data_write(0X30);
cmd_write(0xED);
data_write(0x67);
data_write(0x03);
data_write(0X12);
data_write(0X81);
cmd_write(0xE8);
data_write(0x85);
data_write(0x10);
data_write(0x7A);
cmd_write(0xCB);
data_write(0x39);
data_write(0x2C);
data_write(0x00);
data_write(0x34);
data_write(0x02);
cmd_write(0xF7);
data_write(0x20);
cmd_write(0xEA);
data_write(0x00);
data_write(0x00);
cmd_write(0xC0); /* Power control */
data_write(0x1B); /* VRH[5:0] */
cmd_write(0xC1); /* Power control */
data_write(0x10); /* SAP[2:0];BT[3:0] */
cmd_write(0xC5); /* VCM control */
data_write(0x3F);
data_write(0x3C);
cmd_write(0xC7); /* VCM control2 */
data_write(0XB7);
cmd_write(0x36); /* Memory Access Control */
data_write(0x08);
cmd_write(0x3A);
data_write(0x55);
cmd_write(0xB1);
data_write(0x00);
data_write(0x1B);
cmd_write(0xB6); /* Display Function Control */
data_write(0x0A);
data_write(0xA2);
cmd_write(0xF2); /* 3Gamma Function Disable */
data_write(0x00);
cmd_write(0x26); /* Gamma curve selected */
data_write(0x01);
cmd_write(0xE0); /* Set Gamma */
data_write(0x0F);
data_write(0x2A);
data_write(0x28);
data_write(0x08);
data_write(0x0E);
data_write(0x08);
data_write(0x54);
data_write(0XA9);
data_write(0x43);
data_write(0x0A);
data_write(0x0F);
data_write(0x00);
data_write(0x00);
data_write(0x00);
data_write(0x00);
cmd_write(0XE1); /* Set Gamma */
data_write(0x00);
data_write(0x15);
data_write(0x17);
data_write(0x07);
data_write(0x11);
data_write(0x06);
data_write(0x2B);
data_write(0x56);
data_write(0x3C);
data_write(0x05);
data_write(0x10);
data_write(0x0F);
data_write(0x3F);
data_write(0x3F);
data_write(0x0F);
cmd_write(0x11); /* Exit Sleep */
mp_hal_delay_ms(120);
cmd_write(0x29); /* Display on */
}
static void set_col(uint16_t start_col, uint16_t end_col)
{
cmd_write(0x2A); /* Column Command address */
data_write(start_col >> 8);
data_write(start_col & 0xFF );
data_write(end_col >> 8);
data_write(end_col & 0xFF);
}
static void set_page(uint16_t start_page, uint16_t end_page)
{
cmd_write(0x2B); /* Column Command address */
data_write(start_page >> 8);
data_write(start_page & 0xFF);
data_write(end_page >> 8);
data_write(end_page & 0xFF);
}
void driver_ili9341_clear(uint16_t color)
{
set_col(0, 239);
set_page(0, 319);
cmd_write(0x2c); // start writing to the display ram
mp_hal_pin_high(mp_dc_pin);
mp_hal_pin_low(mp_cs_pin);
for(uint16_t i = 0; i < 38400; i++)
{
raw_write(color >> 10);
raw_write((color >> 6) & 0xFF );
raw_write(color & 0xFF);
raw_write(0);
}
mp_hal_pin_high(mp_cs_pin);
}
#endif

6
nrf5/drivers/display/lcd_ili9341_driver.h
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@ -27,4 +27,10 @@
#ifndef LCD_ILI9341_DRIVER_H__
#define LCD_ILI9341_DRIVER_H__
#include "hal_spi.h"
void driver_ili9341_init(NRF_SPI_Type * p_instance, pin_obj_t * cs_pin, pin_obj_t * dc_pin);
void driver_ili9341_clear(uint16_t color);
#endif // LCD_ILI9341_DRIVER_H__

5
nrf5/drivers/display/lcd_ili9341_obj.c
View File

@ -31,6 +31,7 @@
#include "py/mphal.h"
#include "genhdr/pins.h"
#include "lcd_ili9341_driver.h"
// For now PWM is only enabled for nrf52 targets.
#if MICROPY_PY_DISPLAY_LCD_ILI9341
@ -157,6 +158,8 @@ STATIC mp_obj_t lcd_ili9341_fill(mp_obj_t self_in, mp_obj_t color) {
lcd_ili9341_obj_t *self = MP_OBJ_TO_PTR(self_in);
(void)self;
driver_ili9341_clear(mp_obj_get_int(color));
return mp_const_none;
}
STATIC MP_DEFINE_CONST_FUN_OBJ_2(lcd_ili9341_fill_obj, lcd_ili9341_fill);
@ -177,6 +180,8 @@ STATIC mp_obj_t lcd_ili9341_show(size_t n_args, const mp_obj_t *args) {
num_of_refresh = mp_obj_get_int(args[1]);
}
driver_ili9341_init(self->spi->pyb->spi->instance, self->pin_cs, self->pin_dc);
(void)num_of_refresh;
(void)self;