Bluetooth: Controller: Add additional LE Channel Selection tests

Add additional custom LE Channel Selection #2 tests to cover
event and subevent mapping.

Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: cvinayak

subsys/bluetooth/controller/ll_sw/lll_chan.c

@@ -340,6 +340,8 @@ void lll_chan_sel_2_ut(void)
 	uint8_t const chan_map_1_37_used = 37U;
 	uint8_t chan_map_2[] = {0x00, 0x06, 0xE0, 0x00, 0x1E};
 	uint8_t const chan_map_2_9_used = 9U;
+	uint8_t chan_map_3[] = {0x06, 0x00, 0x00, 0x00, 0x00};
+	uint8_t const chan_map_3_2_used = 2U;
 	uint16_t const chan_id = 0x305F;
 	uint8_t m;
 
@@ -357,7 +359,7 @@ void lll_chan_sel_2_ut(void)
 	m = lll_chan_sel_2(3, chan_id, chan_map_1, chan_map_1_37_used);
 	LL_ASSERT(m == 21U);
 
-	/* Section 3.1 Sample Data 2 (9 used channels) */
+	/* Section 3.2 Sample Data 2 (9 used channels) */
 	m = lll_chan_sel_2(6, chan_id, chan_map_2, chan_map_2_9_used);
 	LL_ASSERT(m == 23U);
 
@@ -367,6 +369,18 @@ void lll_chan_sel_2_ut(void)
 	m = lll_chan_sel_2(8, chan_id, chan_map_2, chan_map_2_9_used);
 	LL_ASSERT(m == 34U);
 
+	/* FIXME: Use Sample Data from Spec, if one is added.
+	 *        Below is a random sample to cover implementation in this file.
+	 */
+	/* Section x.x Sample Data 3 (2 used channels) */
+	m = lll_chan_sel_2(11U, chan_id, chan_map_3, chan_map_3_2_used);
+	LL_ASSERT(m == 1U);
+
+	m = lll_chan_sel_2(12U, chan_id, chan_map_3, chan_map_3_2_used);
+	LL_ASSERT(m == 2U);
+
+	m = lll_chan_sel_2(13U, chan_id, chan_map_3, chan_map_3_2_used);
+	LL_ASSERT(m == 1U);
 
 #if defined(CONFIG_BT_CTLR_ISO)
 	uint16_t prn_subevent_lu;
@@ -473,7 +487,7 @@ void lll_chan_sel_2_ut(void)
 	LL_ASSERT(remap_idx == 8U);
 	LL_ASSERT(m == 8U);
 
-	/* Section 3.1 Sample Data 2 (9 used channels) */
+	/* Section 3.2 Sample Data 2 (9 used channels) */
 	/* BIS subevent 1, event counter 6 */
 	m = lll_chan_iso_event(6, chan_id, chan_map_2, chan_map_2_9_used, &prn_s, &remap_idx);
 	LL_ASSERT((prn_s ^ chan_id) == 10975);
@@ -536,6 +550,74 @@ void lll_chan_sel_2_ut(void)
 	m = lll_chan_iso_subevent(chan_id, chan_map_2, chan_map_2_9_used, &prn_s, &remap_idx);
 	LL_ASSERT(remap_idx == 1U);
 	LL_ASSERT(m == 10U);
+
+	/* FIXME: Use Sample Data from Spec, if one is added.
+	 *        Below is a random sample to cover implementation in this file.
+	 */
+	/* Section x.x Sample Data 3 (2 used channels) */
+	/* BIS subevent 1, event counter 11 */
+	m = lll_chan_iso_event(11U, chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT((prn_s ^ chan_id) == 8628U);
+	LL_ASSERT(remap_idx == 0U);
+	LL_ASSERT(m == 1U);
+
+	/* BIS subvent 2 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 1U);
+	LL_ASSERT(m == 2U);
+
+	/* BIS subvent 3 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 0U);
+	LL_ASSERT(m == 1U);
+
+	/* BIS subvent 4 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 1U);
+	LL_ASSERT(m == 2U);
+
+	/* BIS subevent 1, event counter 12 */
+	m = lll_chan_iso_event(12U, chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT((prn_s ^ chan_id) == 34748U);
+	LL_ASSERT(remap_idx == 1U);
+	LL_ASSERT(m == 2U);
+
+	/* BIS subvent 2 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 0U);
+	LL_ASSERT(m == 1U);
+
+	/* BIS subvent 3 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 1U);
+	LL_ASSERT(m == 2U);
+
+	/* BIS subvent 4 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 0U);
+	LL_ASSERT(m == 1U);
+
+	/* BIS subevent 1, event counter 13 */
+	m = lll_chan_iso_event(13U, chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT((prn_s ^ chan_id) == 22072U);
+	LL_ASSERT(remap_idx == 0U);
+	LL_ASSERT(m == 1U);
+
+	/* BIS subvent 2 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 1U);
+	LL_ASSERT(m == 2U);
+
+	/* BIS subvent 3 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 0U);
+	LL_ASSERT(m == 1U);
+
+	/* BIS subvent 4 */
+	m = lll_chan_iso_subevent(chan_id, chan_map_3, chan_map_3_2_used, &prn_s, &remap_idx);
+	LL_ASSERT(remap_idx == 1U);
+	LL_ASSERT(m == 2U);
+
 #endif /* CONFIG_BT_CTLR_ISO */
 }
 #endif /* CONFIG_BT_CTLR_TEST */