diff --git a/tests/periman/periman.ino b/tests/periman/periman.ino
index 2b391a26738..3ec040817b8 100644
--- a/tests/periman/periman.ino
+++ b/tests/periman/periman.ino
@@ -5,18 +5,12 @@
  */
 
 #include <unity.h>
-#include "HardwareSerial.h"
 #include "Wire.h"
 
 /* Global variables */
 
 String last_test = "";
 
-/* Utility functions */
-
-extern int8_t uart_get_RxPin(uint8_t uart_num);
-extern int8_t uart_get_TxPin(uint8_t uart_num);
-
 /* Unity functions */
 
 // This function is automatically called by unity before each test is run
@@ -38,30 +32,54 @@ void tearDown(void) {
 /* Test functions */
 /* These functions must only init the peripheral on the same pins and update "last_test" */
 
-#if SOC_I2C_SUPPORTED
-void i2c_test(void) {
-  last_test = "I2C";
-  Wire.begin(SOC_RX0, SOC_TX0);
+void gpio_test(void) {
+  pinMode(SOC_RX0, INPUT);
+  pinMode(SOC_TX0, INPUT);
+  last_test = "GPIO";
+}
+
+#if SOC_SDM_SUPPORTED
+void sigmadelta_test(void) {
+  if (!sigmaDeltaAttach(SOC_RX0, 312500)) {
+    TEST_FAIL_MESSAGE("SigmaDelta init failed");
+  }
+  if (!sigmaDeltaAttach(SOC_TX0, 312500)) {
+    TEST_FAIL_MESSAGE("SigmaDelta init failed");
+  }
+  last_test = "SigmaDelta";
+}
+#endif
+
+#if SOC_LEDC_SUPPORTED
+void ledc_test(void) {
+  if (!ledcAttach(SOC_RX0, 5000, 12)) {
+    TEST_FAIL_MESSAGE("LEDC init failed");
+  }
+  if (!ledcAttach(SOC_TX0, 5000, 12)) {
+    TEST_FAIL_MESSAGE("LEDC init failed");
+  }
+  last_test = "LEDC";
 }
 #endif
 
 #if SOC_RMT_SUPPORTED
 void rmt_test(void) {
-  last_test = "RMT";
   if (!rmtInit(SOC_RX0, RMT_TX_MODE, RMT_MEM_NUM_BLOCKS_1, 10000000)) {
     TEST_FAIL_MESSAGE("RMT init failed");
   }
   if (!rmtInit(SOC_TX0, RMT_TX_MODE, RMT_MEM_NUM_BLOCKS_1, 10000000)) {
     TEST_FAIL_MESSAGE("RMT init failed");
   }
+  last_test = "RMT";
 }
 #endif
 
-#if SOC_LEDC_SUPPORTED
-void ledc_test(void) {
-  last_test = "LEDC";
-  ledcAttach(SOC_RX0, 5000, 12);
-  ledcAttach(SOC_TX0, 5000, 12);
+#if SOC_I2C_SUPPORTED
+void i2c_test(void) {
+  if (!Wire.begin(SOC_RX0, SOC_TX0)) {
+    TEST_FAIL_MESSAGE("I2C init failed");
+  }
+  last_test = "I2C";
 }
 #endif
 
@@ -73,8 +91,10 @@ void setup() {
 
   UNITY_BEGIN();
 
-  #if SOC_I2C_SUPPORTED
-  RUN_TEST(i2c_test);
+  RUN_TEST(gpio_test);
+
+  #if SOC_SDM_SUPPORTED
+  RUN_TEST(sigmadelta_test);
   #endif
 
   #if SOC_LEDC_SUPPORTED
@@ -82,7 +102,11 @@ void setup() {
   #endif
 
   #if SOC_RMT_SUPPORTED
-  RUN_TEST(rmt_test);
+  //RUN_TEST(rmt_test);
+  #endif
+
+  #if SOC_I2C_SUPPORTED
+  RUN_TEST(i2c_test);
   #endif
 
   UNITY_END();