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Tiny improvement to M7219

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The registers within the Max7219 can get corrupted a number of ways.  This allows the Max7219 to be reset and fully initialized.
And...  it also allows the user to see the initialization pattern.
This commit is contained in:
Roxy-3D
2018-06-19 14:39:40 -05:00
committed by Scott Lahteine
parent 888d319145
commit 7d491aa015
5 changed files with 22 additions and 22 deletions
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2
Marlin/status_screen_lite_ST7920.h
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@@ -395,7 +395,7 @@ void ST7920_Lite_Status_Screen::draw_degree_symbol(uint8_t x, uint8_t y, bool dr
const uint8_t x_word = x >> 1;
const uint8_t y_top = degree_symbol_y_top;
const uint8_t y_bot = y_top + sizeof(degree_symbol)/sizeof(degree_symbol[0]);
for(uint8_t i = y_top; i < y_bot; i++) {
for (uint8_t i = y_top; i < y_bot; i++) {
uint8_t byte = pgm_read_byte_near(p_bytes++);
set_gdram_address(x_word,i+y*16);
begin_data();