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led_tm1637: allow number to be displayed without leading 0

This commit is contained in:
King Kévin 2020-02-18 17:28:34 +01:00
parent afd5bef309
commit c30b3ecb48
2 changed files with 34 additions and 12 deletions
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35
lib/led_tm1637.c
View File

@ -283,15 +283,36 @@ bool led_tm1637_brightness(enum led_tm1637_brightness_t brightness)
return false;
}
bool led_tm1637_number(uint16_t number)
bool led_tm1637_number(uint16_t number, bool zero)
{
uint8_t write_data[] = { 0x40 }; // command: write data, automatic address adding, normal
uint8_t data[] = { 0xc0, ascii_7segments[((number / 1000) % 10) + '0' - ' '], ascii_7segments[((number / 100) % 10) + '0' - ' '], ascii_7segments[((number / 10) % 10) + '0' - ' '], ascii_7segments[((number / 1) % 10) + '0' - ' '] }; // set address C0H and add data
if (led_tm1637_write(write_data,LENGTH(write_data)) && led_tm1637_write(data,LENGTH(data))) { // send commands
return true;
const uint8_t write_data[] = { 0x40 }; // command: write data, automatic address adding, normal
const uint8_t digits[] = { // digits to display
(number / 1000) % 10,
(number / 100) % 10,
(number / 10) % 10,
(number / 1) % 10,
};
uint8_t data[] = { 0xc0, 0, 0, 0, 0}; // number to be displayed
// convert digits to text to be displayed
if (0 == digits[0] && !zero) {
data[1] = ascii_7segments[' ' - ' '];
} else {
data[1] = ascii_7segments[digits[0] + '0' - ' '];
}
return false;
if (0 == digits[0] && 0 == digits[1] && !zero) {
data[2] = ascii_7segments[' ' - ' '];
} else {
data[2] = ascii_7segments[digits[1] + '0' - ' '];
}
if (0 == digits[0] && 0 == digits[1] && 0 == digits[2] && !zero) {
data[3] = ascii_7segments[' ' - ' '];
} else {
data[3] = ascii_7segments[digits[2] + '0' - ' '];
}
data[4] = ascii_7segments[digits[3] + '0' - ' '];
// display number
return led_tm1637_write(write_data, LENGTH(write_data)) && led_tm1637_write(data, LENGTH(data)); // send commands
}
bool led_tm1637_time(uint8_t hours, uint8_t minutes)

3
lib/led_tm1637.h
View File

@ -52,9 +52,10 @@ bool led_tm1637_off(void);
bool led_tm1637_brightness(enum led_tm1637_brightness_t brightness);
/** display number
* @param[in] number number to display (0-9999)
* @param[in] zero pad number with zero on the left
* @return if transmission succeeded
*/
bool led_tm1637_number(uint16_t number);
bool led_tm1637_number(uint16_t number, bool zero);
/** display time
* @param[in] hours hours to display (0-99)
* @param[in] minutes minutes to display (0-99)