Add BLE CLI tests (#502)

* bt: introduce bt CLI commands
* api-hal-bt: add get rssi
* bt: fix cli commands
* bt: fix typos
* Bt: add missing newline in console message

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

firmware/targets/f6/api-hal/api-hal-bt.c

@@ -82,26 +82,58 @@ void api_hal_bt_unlock_flash() {
     }
 }
 
-void api_hal_bt_start_tone_tx(uint8_t tx_channel, uint8_t power) {
+void api_hal_bt_start_tone_tx(uint8_t channel, uint8_t power) {
     aci_hal_set_tx_power_level(0, power);
-    aci_hal_tone_start(tx_channel, 0);
+    aci_hal_tone_start(channel, 0);
 }
 
 void api_hal_bt_stop_tone_tx() {
     aci_hal_tone_stop();
 }
 
-void api_hal_bt_start_packet_tx(uint8_t frequency, uint8_t datarate) {
-    hci_le_enhanced_transmitter_test(frequency, 0x25, 2, datarate);
+void api_hal_bt_start_packet_tx(uint8_t channel, uint8_t pattern, uint8_t datarate) {
+    hci_le_enhanced_transmitter_test(channel, 0x25, pattern, datarate);
 }
 
-void api_hal_bt_stop_packet_tx() {
+void api_hal_bt_start_packet_rx(uint8_t channel, uint8_t datarate) {
+    hci_le_enhanced_receiver_test(channel, datarate, 0);
+}
+
+uint16_t api_hal_bt_stop_packet_test() {
     uint16_t num_of_packets;
     hci_le_test_end(&num_of_packets);
+    return num_of_packets;
 }
 
-void api_hal_bt_start_rx(uint8_t frequency) {
-    aci_hal_rx_start(frequency);
+void api_hal_bt_start_rx(uint8_t channel) {
+    aci_hal_rx_start(channel);
+}
+
+float api_hal_bt_get_rssi() {
+    float val;
+    uint8_t rssi_raw[3];
+    aci_hal_read_raw_rssi(rssi_raw);
+
+    // Some ST magic with rssi
+    uint8_t agc = rssi_raw[2] & 0xFF;
+    int rssi = (rssi_raw[1] << 8 & 0xFF00) + (rssi_raw[1] & 0xFF);
+    if(rssi == 0 || agc > 11) {
+        val = 127;
+    } else {
+        val = agc * 6.0f - 127.0f;
+        while(rssi > 30) {
+            val += 6.0;
+            rssi >>=1;
+        }
+        val += (417 * rssi + 18080) >> 10;
+    }
+    return val;
+}
+
+uint32_t api_hal_bt_get_transmitted_packets() {
+    uint32_t packets = 0;
+    aci_hal_le_tx_test_packet_number(&packets);
+    return packets;
 }
 
 void api_hal_bt_stop_rx() {