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No need to mask the CGRAM data before sending

This commit is contained in:
Alex Voinea 2023-09-23 20:25:12 +02:00
parent 4a24990c75
commit 09c85796a6
1 changed files with 1 additions and 1 deletions
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2
Firmware/lcd.cpp
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@ -395,7 +395,7 @@ void lcd_createChar_P(uint8_t location, const CustomCharacter *char_p)
"swap __tmp_reg__" "\n\t" // swap the nibbles "swap __tmp_reg__" "\n\t" // swap the nibbles
"mov %0, __tmp_reg__" "\n\t" // copy row data to temp "mov %0, __tmp_reg__" "\n\t" // copy row data to temp
"andi %0, 0xF" "\n\t" // mask lower nibble // "andi %0, 0xF" "\n\t" // mask lower nibble - Not needed since bits 7-5 of the CGRAM are don't care, so they can contain garbage
"ror %1" "\n\t" // consume LSB of colByte and push it to the carry "ror %1" "\n\t" // consume LSB of colByte and push it to the carry
"rol %0" "\n\t" // insert the column LSB from carry "rol %0" "\n\t" // insert the column LSB from carry
"st %a3+, %0" "\n\t" // push the generated row data to the output "st %a3+, %0" "\n\t" // push the generated row data to the output