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canbus: canopen: add LED indicator support

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Add support for CANopen LED indicators according to the CAN in
Automation (CiA) 303-3 specification.

This fixes #15278.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2019-09-28 21:45:44 +02:00 • committed by Carles Cufí
commit 308f204952
4 changed files with 133 additions and 0 deletions
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26
include/canbus/canopen.h
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@ -86,6 +86,32 @@ int canopen_storage_save(enum canopen_storage storage);
*/
int canopen_storage_erase(enum canopen_storage storage);
/**
* @typedef canopen_led_callback_t
* @brief CANopen LED indicator callback function signature.
*
* @param value true if the LED indicator shall be turned on, false otherwise.
* @param arg argument that was passed when LEDs were initialized.
*/
typedef void (*canopen_led_callback_t)(bool value, void *arg);
/**
* @brief Initialize CANopen LED indicators.
*
* Initialize CANopen LED indicators and attach callbacks for setting
* their state. Two LED indicators, a red and a green, are supported
* according to CiA 303-3.
*
* @param nmt CANopenNode NMT object.
* @param green_cb callback for changing state on the green LED indicator.
* @param green_arg argument to pass to the green LED indicator callback.
* @param red_cb callback for changing state on the red LED indicator.
* @param red_arg argument to pass to the red LED indicator callback.
*/
void canopen_leds_init(CO_NMT_t *nmt,
canopen_led_callback_t green_cb, void *green_arg,
canopen_led_callback_t red_cb, void *red_arg);
#ifdef __cplusplus
}
#endif