moved stm32 into directory added noddy pcb

1 files changed, 0 insertions, 477 deletions

diff --git a/app/not/lcd.c b/app/not/lcd.c
deleted file mode 100644
index d6ee5c7..0000000
--- a/app/not/lcd.c
+++ /dev/null
@@ -1,477 +0,0 @@
-#include "project.h"
-
-
-#define PCF8574_I2C_ADDRESS 0x27
-
-#define LINE_RS		0x1
-#define LINE_RnW	0x2
-#define LINE_EN		0x4
-#define LINE_BACKLIGHT	0x8
-
-#define LCD_CLEAR	0x1
-#define LCD_HOME	0x2
-
-#define LCD_DISP 	0x8
-#define LCD_DISP_ON 	0x4
-#define LCD_DISP_CURSOR 0x2
-#define LCD_DISP_CURSOR_BLINK 0x1
-
-#define LCD_FUNC        0x20
-#define LCD_FUNC_8BIT   0x10
-#define LCD_FUNC_4BIT	0x00
-#define LCD_FUNC_2ROWS	0x08
-#define LCD_FUNC_1ROW 	0x00
-#define LCD_FUNC_5x10 	0x04
-#define LCD_FUNC_5X7	0x00
-
-#define LCD_SET_DDRAM_ADDR 0x80
-
-#define LCD_H_SHIFT 5
-#define LCD_RS (1 << LCD_H_SHIFT)
-#define LCD_W 20
-#define LCD_W_MASK (LCD_RS -1 )
-#define LCD_H 4
-#define LCD_SZ (LCD_H << LCD_H_SHIFT)
-#define LCD_POS(c,r) (((r) << LCD_H_SHIFT ) +(c))
-
-#define BYTES_PER_BYTE 6
-
-#define DMA_BUF_SZ (BYTES_PER_BYTE * ( (1 + LCD_W) *LCD_H  + 1))
-
-static uint8_t dma_buf[DMA_BUF_SZ];
-static uint8_t update_buf[DMA_BUF_SZ];
-static int dma_in_progress = 0;
-static int refresh_enabled = 0;
-
-static int backlight;
-static int pos;
-
-static void
-clock_nibble (uint8_t n)
-{
-  if (backlight)
-    n |= LINE_BACKLIGHT;
-  i2cp_send(n);
-  i2cp_send(LINE_EN | n);
-  i2cp_send(n);
-}
-
-
-static void
-write_reg (uint8_t c, int r)
-{
-  uint8_t b;
-
-  b = c & 0xf0;
-  if (r)
-    b |= LINE_RS;
-
-  clock_nibble (b);
-
-  b = (c & 0xf) << 4;
-  if (r)
-    b |= LINE_RS;
-
-  clock_nibble (b);
-}
-
-static void
-send_command (uint8_t c)
-{
-  write_reg (c, 0);
-}
-
-static void
-send_one_command (uint8_t cmd, int delay)
-{
-  while (i2c_lock ());
-  i2cp_start_transaction (PCF8574_I2C_ADDRESS, I2C_WRITE);
-  send_command (cmd);
-  i2cp_stop ();
-  if (delay)
-    delay_ms (delay);
-  i2c_unlock ();
-}
-
-
-
-static void
-cls (void)
-{
-  send_one_command (LCD_CLEAR, 2);
-}
-
-#if 0
-static void
-home (void)
-{
-  send_one_command (LCD_HOME, 2);
-}
-#endif
-
-static void
-on (void)
-{
-  send_one_command (LCD_DISP | LCD_DISP_ON /* | LCD_DISP_CURSOR */ , 4);
-}
-
-static void
-off (void)
-{
-  send_one_command (LCD_DISP, 4);
-}
-
-static int
-lcd_addr (int x, int y)
-{
-  return x + ((y & 1) << 6) + ((y & 2) ? 20 : 0);
-}
-
-
-#if 0
-static void
-move (uint8_t c, uint8_t r)
-{
-  send_one_command (LCD_SET_DDRAM_ADDR | lcd_addr (c, r), 2);
-}
-#endif
-
-
-uint32_t refresh_wdt = 0;
-
-static void
-start_dma (void)
-{
-  if (dma_in_progress)
-    return;
-
-  refresh_wdt = 0;
-
-  dma_in_progress = 1;
-
-  memcpy (dma_buf, update_buf, DMA_BUF_SZ);
-  i2cp_start_transaction (PCF8574_I2C_ADDRESS, I2C_WRITE);
-  i2cp_start_dma (dma_buf, DMA_BUF_SZ);
-
-}
-
-void
-dma1_channel6_isr (void)
-{
-  if (dma_in_progress)
-    {
-      i2cp_stop_dma ();
-
-      i2cp_stop ();
-      dma_in_progress = 0;
-    }
-
-  if (refresh_enabled)
-    start_dma ();
-}
-
-void
-lcd_refresh_wdt (void)
-{
-  refresh_wdt++;
-
-  if (refresh_wdt < 1000)
-    return;
-
-  refresh_wdt = 0;
-
-/*No refresh for 1s, restart everything */
-
-  i2cp_stop_dma ();
-  i2cp_stop ();
-  dma_in_progress = 0;
-
-  start_dma ();
-
-}
-
-static inline void
-dma_clock_nibble (uint8_t * ptr, uint8_t n)
-{
-  if (backlight)
-    n |= LINE_BACKLIGHT;
-  *(ptr++) = n;
-  *(ptr++) = n | LINE_EN;
-  *(ptr++) = n;
-}
-
-
-static inline int
-dma_write_reg (uint8_t * ptr, uint8_t c, int r)
-{
-  uint8_t b;
-
-  b = c & 0xf0;
-  if (r)
-    b |= LINE_RS;
-
-  dma_clock_nibble (ptr, b);
-  ptr += 3;
-
-  b = (c & 0xf) << 4;
-  if (r)
-    b |= LINE_RS;
-
-  dma_clock_nibble (ptr, b);
-
-  return 6;
-}
-
-static inline int
-dma_command (uint8_t * ptr, uint8_t c)
-{
-  return dma_write_reg (ptr, c, 0);
-}
-
-static inline int
-dma_data (uint8_t * ptr, uint8_t c)
-{
-  return dma_write_reg (ptr, c, 1);
-}
-
-
-static void
-dma_generate_stream (void)
-{
-  uint8_t *dma_ptr;
-  int x, y, i;
-
-  dma_ptr = update_buf;
-/* 6 bytes per character, 6 bytes to move position, 5 moves + 20*4 chars => 510*/
-
-  for (y = 0; y < LCD_H; ++y)
-    {
-
-      dma_ptr += dma_command (dma_ptr, LCD_SET_DDRAM_ADDR | lcd_addr (0, y));
-
-      i = y << LCD_H_SHIFT;
-
-      for (x = 0; x < LCD_W; ++x, i++)
-        {
-          dma_ptr += dma_data (dma_ptr, ' ');
-        }
-    }
-
-  dma_ptr += dma_command (dma_ptr, LCD_SET_DDRAM_ADDR |
-                          lcd_addr (pos & LCD_W_MASK, pos >> LCD_H_SHIFT));
-
-}
-
-
-static void
-dma_change_backlight (void)
-{
-  int len = DMA_BUF_SZ;
-  uint8_t *p = update_buf;
-
-  cm_disable_interrupts ();
-
-  if (backlight)
-    while (p++, len--)
-      *p |= LINE_BACKLIGHT;
-  else
-    while (p++, len--)
-      *p &= ~LINE_BACKLIGHT;
-
-  cm_enable_interrupts ();
-}
-
-
-static int
-dma_offset (int x, int y)
-{
-  return BYTES_PER_BYTE * (1 + x + y * (LCD_W + 1));
-}
-
-
-
-static void
-_lcd_write_char (uint8_t c, int x, int y)
-{
-  cm_disable_interrupts ();
-  dma_data (update_buf + dma_offset (x, y), c);
-  cm_enable_interrupts ();
-}
-
-
-void
-lcd_write_char (uint8_t c, int x, int y)
-{
-  cm_disable_interrupts ();
-  _lcd_write_char (c, x, y);
-  cm_enable_interrupts ();
-}
-
-
-void
-lcd_erase (int x, int y, int w)
-{
-  uint8_t *dma_ptr = update_buf + dma_offset (x, y);
-  cm_disable_interrupts ();
-  while (w--)
-    dma_ptr += dma_data (dma_ptr, ' ');
-  cm_enable_interrupts ();
-}
-
-void
-lcd_erase_line (int w, int y)
-{
-  lcd_erase (0, y, w);
-}
-
-void
-lcd_erase_all (void)
-{
-  int y;
-  for (y = 0; y < LCD_H; ++y)
-    {
-      lcd_erase (0, 0, LCD_W);
-    }
-}
-
-void
-lcd_write (char *c, int x, int y)
-{
-  cm_disable_interrupts ();
-  while (*c)
-    {
-      _lcd_write_char (*(c++), x++, y);
-      if (x == LCD_W)
-        break;
-    }
-  cm_enable_interrupts ();
-}
-
-#if 0
-static void
-lcd_scroll (uint8_t * p)
-{
-  int i;
-  for (i = 0; i < 3; ++i)
-    {
-      memcpy (p, p + LCD_RS, LCD_W);
-      p += LCD_RS;
-    }
-  memset (p, ' ', LCD_W);
-}
-
-void
-lcd_putc (uint8_t c)
-{
-
-  switch (c)
-    {
-    case '\r':
-      pos &= ~LCD_W_MASK;
-      break;
-    case '\n':
-      pos &= ~LCD_W_MASK;
-      pos += LCD_RS;
-      break;
-    default:
-      buf[pos] = c;
-      pos++;
-    }
-
-
-  if ((pos & LCD_W_MASK) == LCD_W)
-    {
-      pos &= ~LCD_W_MASK;
-      pos += LCD_RS;
-    }
-
-  if (pos == LCD_SZ)
-    {
-      lcd_scroll (buf);
-      pos -= LCD_RS;
-    }
-
-
-}
-#endif
-
-
-void
-lcd_backlight (int i)
-{
-  backlight = i;
-
-  dma_change_backlight ();
-
-  if (refresh_enabled)
-    return;
-
-  while (i2c_lock ());
-  i2cp_start_transaction (PCF8574_I2C_ADDRESS, I2C_WRITE);
-  i2cp_send(backlight ? LINE_BACKLIGHT : 0);
-  i2cp_stop ();
-  i2c_unlock ();
-}
-
-
-
-
-
-void
-lcd_enable_refresh (void)
-{
-  refresh_enabled = 1;
-  start_dma ();
-}
-
-
-void
-lcd_disable_refresh (void)
-{
-  refresh_enabled = 0;
-  while (dma_in_progress);
-}
-
-
-
-void
-lcd_reset (void)
-{
-  while (i2c_lock ());
-  i2cp_start_transaction (PCF8574_I2C_ADDRESS, I2C_WRITE);
-  clock_nibble (0x30);
-  delay_ms (5);
-  clock_nibble (0x30);
-  delay_us (64);
-  clock_nibble (0x30);
-  delay_us (64);
-  clock_nibble (0x20);
-
-  send_command (LCD_FUNC | LCD_FUNC_4BIT | LCD_FUNC_2ROWS | LCD_FUNC_5X7);
-  i2cp_stop ();
-  i2c_unlock ();
-
-  on ();
-  cls ();
-}
-
-void
-lcd_init (void)
-{
-  lcd_backlight (0);
-  lcd_reset ();
-  lcd_backlight (1);
-
-  dma_generate_stream ();
-
-  nvic_enable_irq (NVIC_DMA1_CHANNEL6_IRQ);
-  lcd_enable_refresh ();
-}
-
-void
-lcd_shutdown (void)
-{
-  lcd_disable_refresh ();
-  lcd_backlight (0);
-  off ();
-}