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sensor_gm1351: make decoding user driven

This commit is contained in:
King Kévin 2021-01-28 11:12:32 +01:00
parent 58924500e3
commit 9d98ab21fc
2 changed files with 11 additions and 5 deletions
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2
lib/sensor_gm1351.c
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@ -273,7 +273,7 @@ void sensor_gm1351_power_toggle(void)
/** decode LCD pattern to displayed number /** decode LCD pattern to displayed number
* @return if number has been decoded correctly * @return if number has been decoded correctly
*/ */
static bool sensor_gm1351_decode(void) bool sensor_gm1351_decode(void)
{ {
// do some sanity check // do some sanity check
if (sensor_gm1351_data[0] != 0xa0) { // set LCD segments header if (sensor_gm1351_data[0] != 0xa0) { // set LCD segments header

14
lib/sensor_gm1351.h
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@ -19,15 +19,21 @@
* @note peripherals used: GPIO @ref sensor_gm1351_gpio, SPI @ref sensor_gm1351_spi * @note peripherals used: GPIO @ref sensor_gm1351_gpio, SPI @ref sensor_gm1351_spi
*/ */
/** measurement displayed on meter LCD */ /** measurement displayed on meter LCD, in deci-dBa
* @warning value is only valid if decoding is successful
*/
extern uint16_t sensor_gm1351_decidba; extern uint16_t sensor_gm1351_decidba;
/** flag set when valid measurement has been received */ /** flag set when LCD data has been received */
extern volatile bool sensor_gm1351_received_flag; extern volatile bool sensor_gm1351_received_flag;
/** initialise interface to GM1351 sound level meter */ /** initialise interface to GM1351 sound level meter */
void sensor_gm1351_setup(void); void sensor_gm1351_setup(void);
/** switch power of meter /** switch power of meter
* @warning: the device will power off after 10 minutes * @warning the device will power off after 10 minutes
*/ */
void sensor_gm1351_power_toggle(void); void sensor_gm1351_power_toggle(void);
/** decode LCD data to displayed number
* @return if number has been decoded correctly
* @warning should be done before the next LCD data is being received (e.g. right after the flag is set)
*/
bool sensor_gm1351_decode(void);