diff options
Diffstat (limited to 'stm/lcd.c')
| -rw-r--r-- | stm/lcd.c | 385 |
1 files changed, 0 insertions, 385 deletions
diff --git a/stm/lcd.c b/stm/lcd.c deleted file mode 100644 index 44c4833a5b..0000000000 --- a/stm/lcd.c +++ /dev/null @@ -1,385 +0,0 @@ -#include <string.h> -#include <stm32f4xx_gpio.h> - -#include "mpconfig.h" -#include "nlr.h" -#include "misc.h" - -#if MICROPY_HW_HAS_LCD - -#include "qstr.h" -#include "parse.h" -#include "obj.h" -#include "runtime.h" - -#include "systick.h" -#include "font_petme128_8x8.h" -#include "lcd.h" - -#if defined(PYBOARD3) -#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 -*/ -#elif defined(STM32F4DISC) -/* Configure if needed */ -#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 -#endif - -#define LCD_INSTR (0) -#define LCD_DATA (1) - -static void lcd_out(int instr_data, uint8_t i) { - sys_tick_delay_ms(0); - PYB_LCD_PORT->BSRRH = PYB_LCD_CS1_PIN; // CS=0; enable - if (instr_data == LCD_INSTR) { - PYB_LCD_PORT->BSRRH = PYB_LCD_A0_PIN; // A0=0; select instr reg - } else { - PYB_LCD_PORT->BSRRL = PYB_LCD_A0_PIN; // A0=1; select data reg - } - // send byte bigendian, latches on rising clock - for (uint32_t n = 0; n < 8; n++) { - sys_tick_delay_ms(0); - PYB_LCD_PORT->BSRRH = PYB_LCD_SCL_PIN; // SCL=0 - if ((i & 0x80) == 0) { - PYB_LCD_PORT->BSRRH = PYB_LCD_SI_PIN; // SI=0 - } else { - PYB_LCD_PORT->BSRRL = PYB_LCD_SI_PIN; // SI=1 - } - i <<= 1; - sys_tick_delay_ms(0); - PYB_LCD_PORT->BSRRL = PYB_LCD_SCL_PIN; // SCL=1 - } - PYB_LCD_PORT->BSRRL = PYB_LCD_CS1_PIN; // CS=1; disable - - /* - in Python, native types: - CS1_PIN(const) = 0 - n = int(0) - delay_ms(0) - PORT[word:BSRRH] = 1 << CS1_PIN - for n in range(0, 8): - delay_ms(0) - PORT[word:BSRRH] = 1 << SCL_PIN - if i & 0x80 == 0: - PORT[word:BSRRH] = 1 << SI_PIN - else: - PORT[word:BSRRL] = 1 << SI_PIN - i <<= 1 - delay_ms(0) - PORT[word:BSRRL] = 1 << SCL_PIN - */ -} - -/* -static void lcd_data_out(uint8_t i) { - delay_ms(0); - PYB_LCD_PORT->BSRRH = PYB_LCD_CS1_PIN; // CS=0; enable - PYB_LCD_PORT->BSRRL = PYB_LCD_A0_PIN; // A0=1; select data reg - // send byte bigendian, latches on rising clock - for (uint32_t n = 0; n < 8; n++) { - delay_ms(0); - PYB_LCD_PORT->BSRRH = PYB_LCD_SCL_PIN; // SCL=0 - if ((i & 0x80) == 0) { - PYB_LCD_PORT->BSRRH = PYB_LCD_SI_PIN; // SI=0 - } else { - PYB_LCD_PORT->BSRRL = PYB_LCD_SI_PIN; // SI=1 - } - i <<= 1; - delay_ms(0); - PYB_LCD_PORT->BSRRL = PYB_LCD_SCL_PIN; // SCL=1 - } - PYB_LCD_PORT->BSRRL = PYB_LCD_CS1_PIN; // CS=1; disable -} -*/ - -// writes 8 vertical pixels -// pos 0 is upper left, pos 1 is 8 pixels to right of that, pos 128 is 8 pixels below that -mp_obj_t lcd_draw_pixel_8(mp_obj_t mp_pos, mp_obj_t mp_val) { - int pos = mp_obj_get_int(mp_pos); - int val = mp_obj_get_int(mp_val); - int page = pos / 128; - int offset = pos - (page * 128); - lcd_out(LCD_INSTR, 0xb0 | page); // page address set - lcd_out(LCD_INSTR, 0x10 | ((offset >> 4) & 0x0f)); // column address set upper - lcd_out(LCD_INSTR, 0x00 | (offset & 0x0f)); // column address set lower - lcd_out(LCD_DATA, val); // write data - return mp_const_none; -} - -#define LCD_BUF_W (16) -#define LCD_BUF_H (4) - -char lcd_char_buffer[LCD_BUF_W * LCD_BUF_H]; -int lcd_line; -int lcd_column; -int lcd_next_line; - -#define LCD_PIX_BUF_SIZE (128 * 32 / 8) -byte lcd_pix_buf[LCD_PIX_BUF_SIZE]; -byte lcd_pix_buf2[LCD_PIX_BUF_SIZE]; - -mp_obj_t lcd_pix_clear(void) { - memset(lcd_pix_buf, 0, LCD_PIX_BUF_SIZE); - memset(lcd_pix_buf2, 0, LCD_PIX_BUF_SIZE); - return mp_const_none; -} - -mp_obj_t lcd_pix_get(mp_obj_t mp_x, mp_obj_t mp_y) { - int x = mp_obj_get_int(mp_x); - int y = mp_obj_get_int(mp_y); - if (0 <= x && x <= 127 && 0 <= y && y <= 31) { - uint byte_pos = x + 128 * ((uint)y >> 3); - if (lcd_pix_buf[byte_pos] & (1 << (y & 7))) { - return mp_obj_new_int(1); - } - } - return mp_obj_new_int(0); -} - -mp_obj_t lcd_pix_set(mp_obj_t mp_x, mp_obj_t mp_y) { - int x = mp_obj_get_int(mp_x); - int y = mp_obj_get_int(mp_y); - if (0 <= x && x <= 127 && 0 <= y && y <= 31) { - uint byte_pos = x + 128 * ((uint)y >> 3); - lcd_pix_buf2[byte_pos] |= 1 << (y & 7); - } - return mp_const_none; -} - -mp_obj_t lcd_pix_reset(mp_obj_t mp_x, mp_obj_t mp_y) { - int x = mp_obj_get_int(mp_x); - int y = mp_obj_get_int(mp_y); - if (0 <= x && x <= 127 && 0 <= y && y <= 31) { - uint byte_pos = x + 128 * ((uint)y >> 3); - lcd_pix_buf2[byte_pos] &= ~(1 << (y & 7)); - } - return mp_const_none; -} - -mp_obj_t lcd_pix_show(void) { - memcpy(lcd_pix_buf, lcd_pix_buf2, LCD_PIX_BUF_SIZE); - for (uint page = 0; page < 4; page++) { - lcd_out(LCD_INSTR, 0xb0 | page); // page address set - lcd_out(LCD_INSTR, 0x10); // column address set upper; 0 - lcd_out(LCD_INSTR, 0x00); // column address set lower; 0 - for (uint i = 0; i < 128; i++) { - lcd_out(LCD_DATA, lcd_pix_buf[i + 128 * page]); - } - } - return mp_const_none; -} - -mp_obj_t lcd_print(mp_obj_t text) { - uint len; - const char *data = mp_obj_str_get_data(text, &len); - lcd_print_strn(data, len); - return mp_const_none; -} - -mp_obj_t lcd_light(mp_obj_t value) { -#if defined(PYB_LCD_BL_PORT) - if (mp_obj_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; - PYB_LCD_PORT->BSRRL = PYB_LCD_A0_PIN; - PYB_LCD_PORT->BSRRL = PYB_LCD_SCL_PIN; - PYB_LCD_PORT->BSRRL = PYB_LCD_SI_PIN; - - // make them push/pull outputs - GPIO_InitTypeDef GPIO_InitStructure; - GPIO_InitStructure.GPIO_Pin = PYB_LCD_CS1_PIN | PYB_LCD_RST_PIN | PYB_LCD_A0_PIN | PYB_LCD_SCL_PIN | PYB_LCD_SI_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_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 - sys_tick_delay_ms(1); // wait for reset; 2us min - PYB_LCD_PORT->BSRRL = PYB_LCD_RST_PIN; // RST=1; enable - sys_tick_delay_ms(1); // wait for reset; 2us min - lcd_out(LCD_INSTR, 0xa0); // ADC select, normal - lcd_out(LCD_INSTR, 0xc8); // common output mode select, reverse - lcd_out(LCD_INSTR, 0xa2); // LCD bias set, 1/9 bias - lcd_out(LCD_INSTR, 0x2f); // power control set, 0b111=(booster on, vreg on, vfollow on) - lcd_out(LCD_INSTR, 0x21); // v0 voltage regulator internal resistor ratio set, 0b001=small - lcd_out(LCD_INSTR, 0x81); // electronic volume mode set - lcd_out(LCD_INSTR, 0x34); // electronic volume register set, 0b110100 - lcd_out(LCD_INSTR, 0x40); // display start line set, 0 - lcd_out(LCD_INSTR, 0xaf); // LCD display, on - - // clear display - for (int page = 0; page < 4; page++) { - lcd_out(LCD_INSTR, 0xb0 | page); // page address set - lcd_out(LCD_INSTR, 0x10); // column address set upper - lcd_out(LCD_INSTR, 0x00); // column address set lower - for (int i = 0; i < 128; i++) { - lcd_out(LCD_DATA, 0x00); - } - } - - for (int i = 0; i < LCD_BUF_H * LCD_BUF_W; i++) { - lcd_char_buffer[i] = ' '; - } - lcd_line = 0; - lcd_column = 0; - lcd_next_line = 0; - - // Micro Python interface - mp_obj_t o = mp_obj_new_type(MP_QSTR_LCD, mp_const_empty_tuple, mp_obj_new_dict(0)); - mp_store_attr(o, qstr_from_str("lcd8"), mp_make_function_n(2, lcd_draw_pixel_8)); - mp_store_attr(o, qstr_from_str("clear"), mp_make_function_n(0, lcd_pix_clear)); - mp_store_attr(o, qstr_from_str("get"), mp_make_function_n(2, lcd_pix_get)); - mp_store_attr(o, qstr_from_str("set"), mp_make_function_n(2, lcd_pix_set)); - mp_store_attr(o, qstr_from_str("reset"), mp_make_function_n(2, lcd_pix_reset)); - mp_store_attr(o, qstr_from_str("show"), mp_make_function_n(0, lcd_pix_show)); - mp_store_attr(o, qstr_from_str("text"), mp_make_function_n(1, lcd_print)); - mp_store_attr(o, qstr_from_str("light"), mp_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; - mp_store_name(qstr_from_str("LCD"), (mp_obj_t)&pyb_lcd_init_obj); -} - -void lcd_print_str(const char *str) { - lcd_print_strn(str, strlen(str)); -} - -void lcd_print_strn(const char *str, unsigned int len) { - int redraw_min = lcd_line * LCD_BUF_W + lcd_column; - int redraw_max = redraw_min; - int did_new_line = 0; - for (; len > 0; len--, str++) { - // move to next line if needed - if (lcd_next_line) { - if (lcd_line + 1 < LCD_BUF_H) { - lcd_line += 1; - } else { - lcd_line = LCD_BUF_H - 1; - for (int i = 0; i < LCD_BUF_W * (LCD_BUF_H - 1); i++) { - lcd_char_buffer[i] = lcd_char_buffer[i + LCD_BUF_W]; - } - for (int i = 0; i < LCD_BUF_W; i++) { - lcd_char_buffer[LCD_BUF_W * (LCD_BUF_H - 1) + i] = ' '; - } - redraw_min = 0; - redraw_max = LCD_BUF_W * LCD_BUF_H; - } - lcd_next_line = 0; - lcd_column = 0; - did_new_line = 1; - } - if (*str == '\n') { - lcd_next_line = 1; - } else if (*str == '\r') { - lcd_column = 0; - } else if (*str == '\b') { - if (lcd_column > 0) { - lcd_column--; - } - } else if (lcd_column >= LCD_BUF_W) { - lcd_next_line = 1; - str -= 1; - len += 1; - } else { - lcd_char_buffer[lcd_line * LCD_BUF_W + lcd_column] = *str; - lcd_column += 1; - int max = lcd_line * LCD_BUF_W + lcd_column; - if (max > redraw_max) { - redraw_max = max; - } - } - } - - int last_page = -1; - for (int i = redraw_min; i < redraw_max; i++) { - int page = i / LCD_BUF_W; - if (page != last_page) { - int offset = 8 * (i - (page * LCD_BUF_W)); - lcd_out(LCD_INSTR, 0xb0 | page); // page address set - lcd_out(LCD_INSTR, 0x10 | ((offset >> 4) & 0x0f)); // column address set upper - lcd_out(LCD_INSTR, 0x00 | (offset & 0x0f)); // column address set lower - last_page = page; - } - int chr = lcd_char_buffer[i]; - if (chr < 32 || chr > 126) { - chr = 127; - } - const uint8_t *chr_data = &font_petme128_8x8[(chr - 32) * 8]; - for (int j = 0; j < 8; j++) { - lcd_out(LCD_DATA, chr_data[j]); - } - } - - if (did_new_line) { - sys_tick_delay_ms(50); - } -} - -#endif // MICROPY_HW_HAS_LCD |