From 75699fe203202a2832fbc81d73862828a8cbbc2b Mon Sep 17 00:00:00 2001
From: Ajith Vasudevan <ajith.vasudevan@gmail.com>
Date: Mon, 22 Feb 2021 15:12:48 +0530
Subject: [PATCH] Removed the need for SPI for TM1637 to work

---
 tasmota/support_tasmota.ino |  4 +---
 tasmota/tasmota.ino         |  5 ++++-
 tasmota/xdrv_13_display.ino |  2 +-
 tasmota/xdsp_interface.ino  | 15 ++++++++++++++-
 4 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/tasmota/support_tasmota.ino b/tasmota/support_tasmota.ino
index 4742537a2..af9aca1e2 100644
--- a/tasmota/support_tasmota.ino
+++ b/tasmota/support_tasmota.ino
@@ -1678,9 +1678,7 @@ void GpioInit(void)
                      ValidSpiPinUsed(GPIO_ST7789_DC) ||  // ST7789 CS may be omitted so chk DC too
                      ValidSpiPinUsed(GPIO_ST7789_CS) ||
                      (ValidSpiPinUsed(GPIO_SSD1331_CS) && ValidSpiPinUsed(GPIO_SSD1331_DC)) ||
-                     ValidSpiPinUsed(GPIO_SDCARD_CS) ||
-                     (ValidSpiPinUsed(GPIO_TM1637CLK) && ValidSpiPinUsed(GPIO_TM1637DIO)) ||
-                     (ValidSpiPinUsed(GPIO_TM1638CLK) && ValidSpiPinUsed(GPIO_TM1638DIO)  && ValidSpiPinUsed(GPIO_TM1638STB))
+                     ValidSpiPinUsed(GPIO_SDCARD_CS)
                     );
     // If SPI_CS and/or SPI_DC is used they must be valid
     TasmotaGlobal.spi_enabled = (valid_cs) ? SPI_MOSI_MISO : SPI_NONE;
diff --git a/tasmota/tasmota.ino b/tasmota/tasmota.ino
index c0b7b4669..7d52e5a44 100644
--- a/tasmota/tasmota.ino
+++ b/tasmota/tasmota.ino
@@ -147,6 +147,7 @@ struct {
   bool module_changed;                      // Indicate module changed since last restart
   bool wifi_stay_asleep;                    // Allow sleep only incase of ESP32 BLE
   bool no_autoexec;                         // Disable autoexec
+  bool tm1637_enabled;                      // TM1637 driver enabled
 
   StateBitfield global_state;               // Global states (currently Wifi and Mqtt) (8 bits)
   uint8_t spi_enabled;                      // SPI configured
@@ -227,7 +228,9 @@ void setup(void) {
   TasmotaGlobal.tele_period = 9999;
   TasmotaGlobal.active_device = 1;
   TasmotaGlobal.global_state.data = 0xF;  // Init global state (wifi_down, mqtt_down) to solve possible network issues
-
+#if defined(USE_DISPLAY) &&  defined(USE_DISPLAY_TM1637)
+  TasmotaGlobal.tm1637_enabled = true;
+#endif
   RtcRebootLoad();
   if (!RtcRebootValid()) {
     RtcReboot.fast_reboot_count = 0;
diff --git a/tasmota/xdrv_13_display.ino b/tasmota/xdrv_13_display.ino
index 54aaca31c..fafeb0452 100755
--- a/tasmota/xdrv_13_display.ino
+++ b/tasmota/xdrv_13_display.ino
@@ -2779,7 +2779,7 @@ bool Xdrv13(uint8_t function)
 {
   bool result = false;
 
-  if ((TasmotaGlobal.i2c_enabled || TasmotaGlobal.spi_enabled || TasmotaGlobal.soft_spi_enabled) && XdspPresent()) {
+  if ((TasmotaGlobal.i2c_enabled || TasmotaGlobal.spi_enabled || TasmotaGlobal.soft_spi_enabled || TasmotaGlobal.tm1637_enabled) && XdspPresent()) {
     switch (function) {
       case FUNC_PRE_INIT:
         DisplayInitDriver();
diff --git a/tasmota/xdsp_interface.ino b/tasmota/xdsp_interface.ino
index 3ca49f3d6..42907ae15 100644
--- a/tasmota/xdsp_interface.ino
+++ b/tasmota/xdsp_interface.ino
@@ -17,7 +17,7 @@
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#if defined(USE_I2C) || defined(USE_SPI)
+#if defined(USE_I2C) || defined(USE_SPI) || defined(USE_DISPLAY_TM1637)
 #ifdef USE_DISPLAY
 
 #ifdef XFUNC_PTR_IN_ROM
@@ -26,6 +26,8 @@ bool (* const xdsp_func_ptr[])(uint8_t) PROGMEM = {   // Display Function Pointe
 bool (* const xdsp_func_ptr[])(uint8_t) = {   // Display Function Pointers
 #endif
 
+#if defined(USE_I2C) || defined(USE_SPI)
+
 #ifdef XDSP_01
   &Xdsp01,
 #endif
@@ -82,10 +84,18 @@ bool (* const xdsp_func_ptr[])(uint8_t) = {   // Display Function Pointers
   &Xdsp14,
 #endif
 
+#endif   // #if defined(USE_I2C) || defined(USE_SPI)
+
+#ifdef USE_DISPLAY_TM1637
+
 #ifdef XDSP_15
   &Xdsp15,
 #endif
 
+#endif  // USE_DISPLAY_TM1637
+
+#if defined(USE_I2C) || defined(USE_SPI)
+
 #ifdef XDSP_16
   &Xdsp16,
 #endif
@@ -153,6 +163,9 @@ bool (* const xdsp_func_ptr[])(uint8_t) = {   // Display Function Pointers
 #ifdef XDSP_32
   &Xdsp32
 #endif
+
+#endif   // #if defined(USE_I2C) || defined(USE_SPI)
+
 };
 
 const uint8_t xdsp_present = sizeof(xdsp_func_ptr) / sizeof(xdsp_func_ptr[0]);  // Number of drivers found