drivers: haptics: add DRV2605_SEQ_WAIT_MS macro

Add a macro to simplify the creation of wait/delay values for the
waveform sequencer.

Signed-off-by: Benjamin Cabé <[email protected]>

Author: kartben

include/zephyr/drivers/haptics/drv2605.h

@@ -26,9 +26,28 @@ extern "C" {
  * @{
  */
 
+/**
+ * @name Helpers
+ * @{
+ */
+
 /** Maximum number of waveforms that can be stored in the sequencer */
 #define DRV2605_WAVEFORM_SEQUENCER_MAX 8
 
+/**
+ * @brief Creates a wait/delay value for the waveform sequencer.
+ *
+ * @details This macro generates a byte value that, when placed in the drv2605_rom_data::seq_regs
+ * array, instructs the DRV2605 playback engine to idle for a specified duration.
+ *
+ * @param ms The desired delay in milliseconds (rounded down to the nearest 10ms). Valid range is
+ * 10 to 1270.
+ * @return A byte literal representing the wait time for the sequencer.
+ */
+#define DRV2605_WAVEFORM_SEQUENCER_WAIT_MS(ms) (0x80 | ((ms) / 10))
+
+/** @} */
+
 /**
  * @brief Effect libraries
  *

samples/drivers/haptics/drv2605/src/main.c

@@ -27,11 +27,11 @@ static struct drv2605_rom_data rom_data = {
 	.sustain_pos_time = 0,
 	.trigger = DRV2605_MODE_INTERNAL_TRIGGER,
 	.seq_regs[0] = 1,
-	.seq_regs[1] = 10 | 0x80,
+	.seq_regs[1] = DRV2605_WAVEFORM_SEQUENCER_WAIT_MS(100),
 	.seq_regs[2] = 2,
-	.seq_regs[3] = 10 | 0x80,
+	.seq_regs[3] = DRV2605_WAVEFORM_SEQUENCER_WAIT_MS(100),
 	.seq_regs[4] = 3,
-	.seq_regs[5] = 10 | 0x80,
+	.seq_regs[5] = DRV2605_WAVEFORM_SEQUENCER_WAIT_MS(100),
 	.seq_regs[6] = 4,
 };