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Fix atmega2560 read_row routine

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This commit is contained in:
Dave 2020-05-09 03:51:24 -05:00
parent a9a759ac82
commit e9630edb03
2 changed files with 14 additions and 13 deletions
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23
firmware/asdf/src/Arch/asdf_arch_atmega2560.c
View File

@ -271,10 +271,10 @@ void asdf_arch_led1_set(uint8_t value)
void asdf_arch_led2_set(uint8_t value)
{
if (value) {
set_bit(&ASDF_LED2_PORT, ASDF_LED2_BIT);
clear_bit(&ASDF_LED2_PORT, ASDF_LED2_BIT);
}
else {
clear_bit(&ASDF_LED2_PORT, ASDF_LED2_BIT);
set_bit(&ASDF_LED2_PORT, ASDF_LED2_BIT);
}
}
@ -296,10 +296,10 @@ void asdf_arch_led2_set(uint8_t value)
void asdf_arch_led3_set(uint8_t value)
{
if (value) {
set_bit(&ASDF_LED3_PORT, ASDF_LED3_BIT);
clear_bit(&ASDF_LED3_PORT, ASDF_LED3_BIT);
}
else {
clear_bit(&ASDF_LED3_PORT, ASDF_LED3_BIT);
set_bit(&ASDF_LED3_PORT, ASDF_LED3_BIT);
}
}
@ -599,7 +599,7 @@ static void asdf_arch_init_ascii_output(void)
// INPUTS: none
// OUTPUTS: none
//
// DESCRIPTION: Sets up columns port as input.
// DESCRIPTION: Sets up columns port as input and enable weak pullups.
//
// SIDE EFFECTS: See DESCRIPTION
//
@ -610,6 +610,7 @@ static void asdf_arch_init_ascii_output(void)
static void asdf_arch_init_columns(void)
{
ASDF_COLUMNS_DDR = ALL_INPUTS;
ASDF_COLUMNS_PORT = ALL_PULLUPS;
}
// PROCEDURE: asdf_arch_init_row_outputs
@ -733,15 +734,13 @@ void asdf_arch_init(void)
//
asdf_cols_t asdf_arch_read_row(uint8_t row)
{
uint16_t rows = (1 << row);
ASDF_HIROW_PORT = rows >> 8;
ASDF_LOROW_PORT = rows & 0xff;
return (asdf_cols_t) ASDF_COLUMNS_PIN;
uint32_t rows = ~(((uint32_t) 1) << row);
ASDF_LOROW_PORT = (uint8_t)(rows & 0xff);
ASDF_HIROW_PORT = (uint8_t)((rows >> 8) & 0xff);
return ~(asdf_cols_t) ASDF_COLUMNS_PIN;
}
// PROCEDURE: asdf_arch_read_row
// PROCEDURE: asdf_arch_osi_read_row
// INPUTS: (uint8_t) row: the row number to be scanned
// OUTPUTS: returns a word containing the active (pressed) columns
//

4
firmware/asdf/src/Arch/asdf_arch_atmega2560.h
View File

@ -271,17 +271,19 @@
#define PIN_OUTPUT 1
#define ALL_INPUTS 0
#define ALL_OUTPUTS 0xff
#define ALL_PULLUPS 0xff
#define ASDF_HIROW_PORT PORTA
#define ASDF_HIROW_DDR DDRA
#define ASDF_HIROW_PIN PINA
#define ASDF_LOROW_PORT PORTJ
#define ASDF_LOROW_DDR DDRJ
#define ASDF_LOROW_PIN PINJ
#define ASDF_COLUMNS_PORT PORTC
#define ASDF_COLUMNS_PIN PINC
#define ASDF_COLUMNS_DDR DDRC
#define ASDF_COLUMNS_PULLUPS 0 // disable weak pullup
#define ASDF_ASCII_PORT PORTH
#define ASDF_ASCII_DDR DDRH