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drivers: sensor: ccs811: provide API to fetch configuration and versions

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The application may want to know the configured mode without inspecting
Kconfig macros; this is important for proper management of BASELINE
which is mode-dependent.

It also may need to know the version of the hardware and firmware, as
the behavior of application firmware 2.0 is significantly better than
version 1.1.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
This commit is contained in:
Peter A. Bigot 2018-11-23 07:16:36 -06:00 • committed by Maureen Helm
commit ac5acb9530
3 changed files with 74 additions and 2 deletions
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26
include/drivers/sensor/ccs811.h
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@ -42,6 +42,7 @@ extern "C" {
#define CCS811_MODE_IAQ_10SEC 0x20
#define CCS811_MODE_IAQ_60SEC 0x30
#define CCS811_MODE_IAQ_250MSEC 0x40
#define CCS811_MODE_MSK 0x70
/** @brief Information collected from the sensor on each fetch. */
struct ccs811_result_type {
@ -81,6 +82,31 @@ struct ccs811_result_type {
*/
const struct ccs811_result_type *ccs811_result(struct device *dev);
/**
* @brief Get information about static CCS811 state.
*
* This includes the configured operating mode as well as hardware and
* firmware versions.
*/
struct ccs811_configver_type {
u16_t fw_boot_version;
u16_t fw_app_version;
u8_t hw_version;
u8_t mode;
};
/**
* @brief Fetch operating mode and version information.
*
* @param dev Pointer to the sensor device
*
* @param ptr Pointer to where the returned information should be stored
*
* @return 0 on success, or a negative errno code on failure.
*/
int ccs811_configver_fetch(struct device *dev,
struct ccs811_configver_type *ptr);
/**
* @brief Fetch the current value of the BASELINE register.
*