static uint16_t ao_lcd_time = 3;
+static __xdata uint8_t ao_lcd_mutex;
+
static void
ao_lcd_delay(void)
{
ao_lcd_port_put_nibble(0, ins & 0xf);
}
-void
+static void
ao_lcd_put_byte(uint8_t c)
{
// printf ("send data %02x\n", c);
{
char c;
+ ao_mutex_get(&ao_lcd_mutex);
while ((c = (uint8_t) *string++))
ao_lcd_put_byte((uint8_t) c);
+ ao_mutex_put(&ao_lcd_mutex);
}
#define AO_LCD_POWER_CONTROL 0x54
void
ao_lcd_contrast_set(uint8_t contrast)
{
+ ao_mutex_get(&ao_lcd_mutex);
ao_lcd_send_ins(AO_LCD_POWER_CONTROL | ((contrast >> 4) & 0x3));
ao_lcd_send_ins(0x70 | (contrast & 0xf));
+ ao_mutex_put(&ao_lcd_mutex);
+}
+
+void
+ao_lcd_cursor_on(void)
+{
+ ao_mutex_get(&ao_lcd_mutex);
+ ao_lcd_send_ins(0x08 | 0x04 | 0x02 | 0x01);
+ ao_mutex_put(&ao_lcd_mutex);
+}
+
+void
+ao_lcd_cursor_off(void)
+{
+ ao_mutex_get(&ao_lcd_mutex);
+ ao_lcd_send_ins(0x08 | 0x04);
+ ao_mutex_put(&ao_lcd_mutex);
}
void
ao_lcd_clear(void)
{
+ ao_mutex_get(&ao_lcd_mutex);
ao_lcd_send_ins(0x01);
ao_delay(1);
/* Entry mode */
ao_lcd_send_ins(0x04 | 0x02);
+ ao_mutex_put(&ao_lcd_mutex);
}
void
ao_lcd_goto(uint8_t addr)
{
+ ao_mutex_get(&ao_lcd_mutex);
ao_lcd_send_ins(0x80 | addr);
ao_lcd_send_ins(0x04 | 0x02);
+ ao_mutex_put(&ao_lcd_mutex);
}
void
ao_lcd_clear();
}
-void
-ao_lcd_contrast(void)
-{
- ao_cmd_hex();
- if (ao_cmd_status == ao_cmd_success) {
- printf("setting contrast to %02x\n", ao_cmd_lex_i);
- ao_lcd_contrast_set(ao_cmd_lex_i & 0x3f);
- }
-}
-
-static uint8_t
-ao_cmd_hex_nibble(void)
-{
- if ('0' <= ao_cmd_lex_c && ao_cmd_lex_c <= '9')
- return ao_cmd_lex_c - '0';
- if ('a' <= ao_cmd_lex_c && ao_cmd_lex_c <= 'f')
- return ao_cmd_lex_c - ('a' - 10);
- if ('A' <= ao_cmd_lex_c && ao_cmd_lex_c <= 'F')
- return ao_cmd_lex_c - ('A' - 10);
- ao_cmd_status = ao_cmd_syntax_error;
- return 0;
-}
-
-void
-ao_lcd_string(void)
-{
- uint8_t col = 0;
- char c;
-
- ao_cmd_decimal();
- if (ao_cmd_status != ao_cmd_success)
- return;
- ao_lcd_send_ins(0x80 | (ao_cmd_lex_i ? 0x40 : 0x00));
- ao_cmd_white();
- while (ao_cmd_lex_c != '\n') {
- c = ao_cmd_lex_c;
- if (c == '\\') {
- ao_cmd_lex();
- c = ao_cmd_hex_nibble() << 4;
- ao_cmd_lex();
- c |= ao_cmd_hex_nibble();
- }
- ao_lcd_put_byte(c);
- ao_cmd_lex();
- col++;
- }
- while (col < 16) {
- ao_lcd_put_byte(' ');
- col++;
- }
-}
-
-void
-ao_lcd_delay_set(void)
-{
- ao_cmd_decimal();
- if (ao_cmd_status == ao_cmd_success) {
- printf("setting LCD delay to %d\n", ao_cmd_lex_i);
- ao_lcd_time = ao_cmd_lex_i;
- }
-}
-
-__code struct ao_cmds ao_lcd_cmds[] = {
- { ao_lcd_start, "S\0Start LCD" },
- { ao_lcd_contrast, "C <contrast>\0Set LCD contrast" },
- { ao_lcd_string, "s <line> <string>\0Send string to LCD" },
- { ao_lcd_delay_set, "t <delay>\0Set LCD delay" },
- { 0, NULL },
-};
-
void
ao_lcd_init(void)
{
ao_lcd_port_init();
- ao_cmd_register(&ao_lcd_cmds[0]);
}