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drivers/analog/ads1115.h: Add ioctl for conversion trigger

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Since the ADS1115 has a relative slow conversion rate, this additional
ioctl command makes it possible to trigger a conversion before reading
the reading the conversion result, allowing the user to perform other
computation in between instead of waiting for the conversion time to
complete. It improves sampling time.

Signed-off-by: Matteo Golin <matteo.golin@gmail.com>
This commit is contained in:
Daniel Byshkin
2025-07-04 15:20:45 -04:00
committed by Matteo Golin
parent a88eb1fc6b
commit 4030eb892e
2 changed files with 279 additions and 251 deletions
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drivers/analog/ads1115.c
+255 -231
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include/nuttx/analog/ads1115.h
+24 -20
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@@ -36,28 +36,32 @@
****************************************************************************/
/* IOCTL Commands
* Cmd: ANIOC_ADS1115_SET_PGA Arg: enum ads1115_pga_e
* Cmd: ANIOC_ADS1115_SET_MODE Arg: enum ads1115_mode_e
* Cmd: ANIOC_ADS1115_SET_DR Arg: enum ads1115_dr_e
* Cmd: ANIOC_ADS1115_SET_COMP_MODE Arg: enum ads1115_comp_mode_e
* Cmd: ANIOC_ADS1115_SET_COMP_POL Arg: enum ads1115_comp_pol_e
* Cmd: ANIOC_ADS1115_SET_COMP_LAT Arg: enum ads1115_comp_lat_e
* Cmd: ANIOC_ADS1115_SET_COMP_QUEUE Arg: enum ads1115_comp_queue_e
* Cmd: ANIOC_ADS1115_READ_CHANNEL Arg: struct adc_msg_s *channel
* Cmd: ANIOC_ADS1115_SET_HI_THRESH Arg: uint16_t value
* Cmd: ANIOC_ADS1115_SET_LO_THRESH Arg: uint16_t value
* Cmd: ANIOC_ADS1115_SET_PGA Arg: enum ads1115_pga_e
* Cmd: ANIOC_ADS1115_SET_MODE Arg: enum ads1115_mode_e
* Cmd: ANIOC_ADS1115_SET_DR Arg: enum ads1115_dr_e
* Cmd: ANIOC_ADS1115_SET_COMP_MODE Arg: enum ads1115_comp_mode_e
* Cmd: ANIOC_ADS1115_SET_COMP_POL Arg: enum ads1115_comp_pol_e
* Cmd: ANIOC_ADS1115_SET_COMP_LAT Arg: enum ads1115_comp_lat_e
* Cmd: ANIOC_ADS1115_SET_COMP_QUEUE Arg: enum ads1115_comp_queue_e
* Cmd: ANIOC_ADS1115_READ_CHANNEL Arg: struct adc_msg_s *channel
* Cmd: ANIOC_ADS1115_SET_HI_THRESH Arg: uint16_t value
* Cmd: ANIOC_ADS1115_SET_LO_THRESH Arg: uint16_t value
* Cmd: ANIOC_ADS1115_TRIGGER_CONVERSION Arg: struct adc_msg_s
* Cmd: ANIOC_ADS1115_READ_CHANNEL_NO_CONVERSION Arg: struct adc_msg_s
*/
#define ANIOC_ADS1115_SET_PGA _ANIOC(AN_ADS1115_FIRST + 0)
#define ANIOC_ADS1115_SET_MODE _ANIOC(AN_ADS1115_FIRST + 1)
#define ANIOC_ADS1115_SET_DR _ANIOC(AN_ADS1115_FIRST + 2)
#define ANIOC_ADS1115_SET_COMP_MODE _ANIOC(AN_ADS1115_FIRST + 3)
#define ANIOC_ADS1115_SET_COMP_POL _ANIOC(AN_ADS1115_FIRST + 4)
#define ANIOC_ADS1115_SET_COMP_LAT _ANIOC(AN_ADS1115_FIRST + 5)
#define ANIOC_ADS1115_SET_COMP_QUEUE _ANIOC(AN_ADS1115_FIRST + 6)
#define ANIOC_ADS1115_READ_CHANNEL _ANIOC(AN_ADS1115_FIRST + 7)
#define ANIOC_ADS1115_SET_HI_THRESH _ANIOC(AN_ADS1115_FIRST + 8)
#define ANIOC_ADS1115_SET_LO_THRESH _ANIOC(AN_ADS1115_FIRST + 9)
#define ANIOC_ADS1115_SET_PGA _ANIOC(AN_ADS1115_FIRST + 0)
#define ANIOC_ADS1115_SET_MODE _ANIOC(AN_ADS1115_FIRST + 1)
#define ANIOC_ADS1115_SET_DR _ANIOC(AN_ADS1115_FIRST + 2)
#define ANIOC_ADS1115_SET_COMP_MODE _ANIOC(AN_ADS1115_FIRST + 3)
#define ANIOC_ADS1115_SET_COMP_POL _ANIOC(AN_ADS1115_FIRST + 4)
#define ANIOC_ADS1115_SET_COMP_LAT _ANIOC(AN_ADS1115_FIRST + 5)
#define ANIOC_ADS1115_SET_COMP_QUEUE _ANIOC(AN_ADS1115_FIRST + 6)
#define ANIOC_ADS1115_READ_CHANNEL _ANIOC(AN_ADS1115_FIRST + 7)
#define ANIOC_ADS1115_SET_HI_THRESH _ANIOC(AN_ADS1115_FIRST + 8)
#define ANIOC_ADS1115_SET_LO_THRESH _ANIOC(AN_ADS1115_FIRST + 9)
#define ANIOC_ADS1115_TRIGGER_CONVERSION _ANIOC(AN_ADS1115_FIRST + 10)
#define ANIOC_ADS1115_READ_CHANNEL_NO_CONVERSION _ANIOC(AN_ADS1115_FIRST + 11)
/****************************************************************************
* Public Types