finga/clock_generator
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Add flag to invert output of twi_error()

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This is only for convinience for the eye to be able to print
"debugging" information not inverted.
This commit is contained in:
finga 2021-09-24 12:27:53 +02:00
parent 2beecbe722
commit 144da8d7f2
1 changed files with 19 additions and 16 deletions
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35
firmware/src/main.c
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@ -335,21 +335,24 @@ static void lcd_splash(void) {
} }
} }
static void twi_error(void) { static void twi_error(bool inverted) {
lcd_fill(0xFF); if (inverted)
lcd_fill(0xFF);
else
lcd_fill(0x00);
for (uint8_t i = 0; i < 2; i++) { for (uint8_t i = 0; i < 2; i++) {
lcd_move_cursor(0, i); lcd_move_cursor(0, i);
lcd_write_string_page("TW_STATUS:\0", i, true); lcd_write_string_page("TW_STATUS:\0", i, inverted);
lcd_write_kerning(2, true); lcd_write_kerning(2, inverted);
lcd_write_integer_page(TW_STATUS, 3, i, true); lcd_write_integer_page(TW_STATUS, 3, i, inverted);
} }
for (uint8_t i = 0; i < 2; i++) { for (uint8_t i = 0; i < 2; i++) {
lcd_move_cursor(0, i + 2); lcd_move_cursor(0, i + 2);
lcd_write_string_page("TW_DATA:\0", i, true); lcd_write_string_page("TW_DATA:\0", i, inverted);
lcd_write_kerning(16, true); lcd_write_kerning(16, inverted);
lcd_write_integer_page(TWDR, 3, i, true); lcd_write_integer_page(TWDR, 3, i, inverted);
} }
for (;;); for (;;);
@ -360,7 +363,7 @@ static void twi_start(void) {
while (!(TWCR & (1 << TWINT))); // Wait until start is transmitted while (!(TWCR & (1 << TWINT))); // Wait until start is transmitted
if (TW_STATUS != TW_START) // Check status if (TW_STATUS != TW_START) // Check status
twi_error(); twi_error(true);
} }
static uint8_t twi_transmit(const uint8_t data) { static uint8_t twi_transmit(const uint8_t data) {
@ -386,11 +389,11 @@ static uint8_t twi_read_register(const uint8_t address,
const uint8_t reg) { const uint8_t reg) {
twi_start(); twi_start();
twi_error();
if (twi_transmit(address << 1) != TW_MT_SLA_ACK) if (twi_transmit(address << 1) != TW_MT_SLA_ACK)
twi_error(true);
if (twi_transmit(reg) != TW_MT_DATA_ACK) if (twi_transmit(reg) != TW_MT_DATA_ACK)
twi_error(); twi_error(true);
twi_stop(); twi_stop();
@ -398,11 +401,11 @@ static uint8_t twi_read_register(const uint8_t address,
twi_start(); twi_start();
twi_error();
if (twi_transmit((address << 1) + 1) != TW_MR_SLA_ACK) if (twi_transmit((address << 1) + 1) != TW_MR_SLA_ACK)
twi_error(true);
if (twi_receive() != TW_MR_DATA_NACK) if (twi_receive() != TW_MR_DATA_NACK)
twi_error(); twi_error(true);
twi_stop(); twi_stop();
@ -414,14 +417,14 @@ static void twi_write_register(const uint8_t address,
const uint8_t data) { const uint8_t data) {
twi_start(); twi_start();
twi_error();
if (twi_transmit(address << 1) != TW_MT_SLA_ACK) if (twi_transmit(address << 1) != TW_MT_SLA_ACK)
twi_error(true);
if (twi_transmit(reg) != TW_MT_DATA_ACK) if (twi_transmit(reg) != TW_MT_DATA_ACK)
twi_error(); twi_error(true);
if (twi_transmit(data) != TW_MT_DATA_ACK) if (twi_transmit(data) != TW_MT_DATA_ACK)
twi_error(); twi_error(true);
twi_stop(); twi_stop();
} }