CrispyPin/bad-apple
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clear screen on startup

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This commit is contained in:
Crispy 2024-04-12 22:36:16 +02:00
parent ea55972ff9
commit 63179fb3f5
1 changed files with 14 additions and 0 deletions
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14
ch32_decoder/bad_apple.c
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@ -16,6 +16,7 @@
void decode_next_frame(); void decode_next_frame();
void refresh_screen(); void refresh_screen();
void clear_screen();
u32 reader = 0; u32 reader = 0;
u32 frame[WIDTH]; u32 frame[WIDTH];
@ -33,6 +34,7 @@ int main()
uint8_t *cmd_list = (uint8_t *)ssd1306_init_array; uint8_t *cmd_list = (uint8_t *)ssd1306_init_array;
while (*cmd_list != SSD1306_TERMINATE_CMDS) while (*cmd_list != SSD1306_TERMINATE_CMDS)
ssd1306_cmd(*cmd_list++); ssd1306_cmd(*cmd_list++);
clear_screen();
while (1) while (1)
{ {
@ -77,6 +79,18 @@ void refresh_screen()
} }
} }
void clear_screen()
{
ssd1306_cmd(SSD1306_COLUMNADDR);
ssd1306_cmd(0); // Column start address (0 = reset)
ssd1306_cmd(127); // Column end address (127 = reset)
ssd1306_cmd(SSD1306_PAGEADDR);
ssd1306_cmd(0); // Page start address (0 = reset)
ssd1306_cmd(7); // Page end address
for (u32 i = 0; i < 32 * 8; i++)
ssd1306_data(frame, SSD1306_PSZ);
}
u8 next_byte() u8 next_byte()
{ {
u8 byte = video[reader]; u8 byte = video[reader];