rmt test: add the case for bug in github[#1815]

components/driver/test/test_rmt.c

@@ -767,4 +767,41 @@ TEST_CASE("RMT loop_en test", "[rmt][test_env=UT_T1_RMT][ignore]")
     TEST_ESP_OK(rmt_driver_uninstall(RMT_RX_CHANNEL));
 }
 
+TEST_CASE("RMT use multi channel", "[rmt][test_env=UT_T1_RMT]")
+{
+    rmt_tx_config_t tx_cfg = {
+        .loop_en = true,  // set it as true
+        .carrier_duty_percent = 50,
+        .carrier_freq_hz = 38000,
+        .carrier_level = 1,
+        .carrier_en = RMT_TX_CARRIER_EN,
+        .idle_level = 0,
+        .idle_output_en = true,
+    };
+    rmt_config_t rmt_tx1 = {
+        .channel = RMT_TX_CHANNEL,
+        .gpio_num = RMT_TX_GPIO_NUM,
+        .mem_block_num = 4,
+        .clk_div = RMT_CLK_DIV,
+        .tx_config = tx_cfg,
+        .rmt_mode = 0,
+    };
+    rmt_config(&rmt_tx1);
+    rmt_driver_install(rmt_tx1.channel, 0, 0);
+
+    rmt_config_t rmt_tx2 = rmt_tx1;
+    rmt_tx2.channel = 2;
+    rmt_config(&rmt_tx2);
+    rmt_driver_install(rmt_tx2.channel, 0, 0);
+
+    rmt_config_t rmt_tx3 = rmt_tx1;
+    rmt_tx3.channel = 7;
+    rmt_tx3.mem_block_num = 1;
+    rmt_config(&rmt_tx3);
+    rmt_driver_install(rmt_tx3.channel, 0, 0);
+
+    TEST_ESP_OK(rmt_driver_uninstall(RMT_TX_CHANNEL));
+    TEST_ESP_OK(rmt_driver_uninstall(2));
+    TEST_ESP_OK(rmt_driver_uninstall(7));
+}