diff options
Diffstat (limited to 'stm/lcd.c')
| -rw-r--r-- | stm/lcd.c | 83 |
1 files changed, 72 insertions, 11 deletions
@@ -13,12 +13,35 @@ #include "font_petme128_8x8.h" #include "lcd.h" +#if defined(PYBOARD) #define PYB_LCD_PORT (GPIOA) #define PYB_LCD_CS1_PIN (GPIO_Pin_0) #define PYB_LCD_RST_PIN (GPIO_Pin_1) #define PYB_LCD_A0_PIN (GPIO_Pin_2) #define PYB_LCD_SCL_PIN (GPIO_Pin_3) #define PYB_LCD_SI_PIN (GPIO_Pin_4) +#elif defined(PYBOARD4) +// X position +#define PYB_LCD_PORT (GPIOA) +#define PYB_LCD_CS1_PIN (GPIO_Pin_2) // X3 +#define PYB_LCD_RST_PIN (GPIO_Pin_3) // X4 +#define PYB_LCD_A0_PIN (GPIO_Pin_4) // X5 +#define PYB_LCD_SCL_PIN (GPIO_Pin_5) // X6 +#define PYB_LCD_SI_PIN (GPIO_Pin_7) // X8 +#define PYB_LCD_BL_PORT (GPIOC) +#define PYB_LCD_BL_PIN (GPIO_Pin_5) // X12 +/* +// Y position +#define PYB_LCD_PORT (GPIOB) +#define PYB_LCD_CS1_PIN (GPIO_Pin_8) // Y3 = PB8 +#define PYB_LCD_RST_PIN (GPIO_Pin_9) // Y4 = PB9 +#define PYB_LCD_A0_PIN (GPIO_Pin_12) // Y5 = PB12 +#define PYB_LCD_SCL_PIN (GPIO_Pin_13) // Y6 = PB13 +#define PYB_LCD_SI_PIN (GPIO_Pin_15) // Y8 = PB15 +#define PYB_LCD_BL_PORT (GPIOB) +#define PYB_LCD_BL_PIN (GPIO_Pin_1) // Y12 = PB1 +*/ +#endif #define LCD_INSTR (0) #define LCD_DATA (1) @@ -171,7 +194,25 @@ mp_obj_t lcd_print(mp_obj_t text) { return mp_const_none; } -void lcd_init(void) { +mp_obj_t lcd_light(mp_obj_t value) { +#if defined(PYB_LCD_BL_PORT) + if (rt_is_true(value)) { + PYB_LCD_BL_PORT->BSRRL = PYB_LCD_BL_PIN; // set pin high to turn backlight on + } else { + PYB_LCD_BL_PORT->BSRRH = PYB_LCD_BL_PIN; // set pin low to turn backlight off + } +#endif + return mp_const_none; +} + +static mp_obj_t mp_lcd = MP_OBJ_NULL; + +static mp_obj_t pyb_lcd_init(void) { + if (mp_lcd != MP_OBJ_NULL) { + // already init'd + return mp_lcd; + } + // set the outputs high PYB_LCD_PORT->BSRRL = PYB_LCD_CS1_PIN; PYB_LCD_PORT->BSRRL = PYB_LCD_RST_PIN; @@ -188,6 +229,17 @@ void lcd_init(void) { GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; GPIO_Init(PYB_LCD_PORT, &GPIO_InitStructure); +#if defined(PYB_LCD_BL_PORT) + // backlight drive pin, starts low (off) + PYB_LCD_BL_PORT->BSRRH = PYB_LCD_BL_PIN; + GPIO_InitStructure.GPIO_Pin = PYB_LCD_BL_PIN; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz; + GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; + GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; + GPIO_Init(PYB_LCD_BL_PORT, &GPIO_InitStructure); +#endif + // init the LCD sys_tick_delay_ms(1); // wait a bit PYB_LCD_PORT->BSRRH = PYB_LCD_RST_PIN; // RST=0; reset @@ -221,16 +273,25 @@ void lcd_init(void) { lcd_column = 0; lcd_next_line = 0; - // Python interface - mp_obj_t m = mp_obj_new_module(QSTR_FROM_STR_STATIC("lcd")); - rt_store_attr(m, QSTR_FROM_STR_STATIC("lcd8"), rt_make_function_n(2, lcd_draw_pixel_8)); - rt_store_attr(m, QSTR_FROM_STR_STATIC("clear"), rt_make_function_n(0, lcd_pix_clear)); - rt_store_attr(m, QSTR_FROM_STR_STATIC("get"), rt_make_function_n(2, lcd_pix_get)); - rt_store_attr(m, QSTR_FROM_STR_STATIC("set"), rt_make_function_n(2, lcd_pix_set)); - rt_store_attr(m, QSTR_FROM_STR_STATIC("reset"), rt_make_function_n(2, lcd_pix_reset)); - rt_store_attr(m, QSTR_FROM_STR_STATIC("show"), rt_make_function_n(0, lcd_pix_show)); - rt_store_attr(m, QSTR_FROM_STR_STATIC("text"), rt_make_function_n(1, lcd_print)); - rt_store_name(QSTR_FROM_STR_STATIC("lcd"), m); + // Micro Python interface + mp_obj_t o = mp_obj_new_type("LCD", mp_const_empty_tuple, mp_obj_new_dict(0)); + rt_store_attr(o, qstr_from_str("lcd8"), rt_make_function_n(2, lcd_draw_pixel_8)); + rt_store_attr(o, qstr_from_str("clear"), rt_make_function_n(0, lcd_pix_clear)); + rt_store_attr(o, qstr_from_str("get"), rt_make_function_n(2, lcd_pix_get)); + rt_store_attr(o, qstr_from_str("set"), rt_make_function_n(2, lcd_pix_set)); + rt_store_attr(o, qstr_from_str("reset"), rt_make_function_n(2, lcd_pix_reset)); + rt_store_attr(o, qstr_from_str("show"), rt_make_function_n(0, lcd_pix_show)); + rt_store_attr(o, qstr_from_str("text"), rt_make_function_n(1, lcd_print)); + rt_store_attr(o, qstr_from_str("light"), rt_make_function_n(1, lcd_light)); + mp_lcd = o; + return o; +} + +static MP_DEFINE_CONST_FUN_OBJ_0(pyb_lcd_init_obj, pyb_lcd_init); + +void lcd_init(void) { + mp_lcd = MP_OBJ_NULL; + rt_store_name(qstr_from_str("LCD"), (mp_obj_t)&pyb_lcd_init_obj); } void lcd_print_str(const char *str) { |