drop frames that use a refresh rate over 125Hz

PPUC · Feb 17, 2025 · 5001a07 · 5001a07
1 parent cd3ad2e
commit 5001a07
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Showing 3 changed files with 16 additions and 5 deletions.
diff --git a/src/ZeDMD.cpp b/src/ZeDMD.cpp
@@ -639,6 +639,17 @@ void ZeDMD::RenderRgb565(uint16_t* pFrame)
 }
 bool ZeDMD::UpdateFrameBuffer888(uint8_t* pFrame)
 {
+  static auto lastExecutionTime = std::chrono::steady_clock::now();
+
+  auto currentTime = std::chrono::steady_clock::now();
+
+  // 8ms means 125Hz. Drop frames of that and higher frame rates because ZeDMD HD can't handle them.
+  if (std::chrono::duration_cast<std::chrono::milliseconds>(currentTime - lastExecutionTime).count() < 8) {
+    return false;
+  }
+
+  lastExecutionTime = currentTime;
+
   if (0 == memcmp(m_pFrameBuffer, pFrame, m_romWidth * m_romHeight * 3))
   {
     return false;

diff --git a/src/ZeDMDComm.cpp b/src/ZeDMDComm.cpp
@@ -914,10 +914,10 @@ bool ZeDMDComm::SendChunks(uint8_t* pData, uint16_t size)
     defined(__ANDROID__))
 
   static uint8_t guru[4] = {'G', 'u', 'r', 'u'};
-  uint8_t ack[CTRL_CHARS_HEADER_SIZE + 1] = {0};
+  uint8_t ack[CTRL_CHARS_HEADER_SIZE + 2] = {0};
   int status = 0;
   uint16_t sent = 0;
-  uint8_t message[64];
+  uint8_t message[65] = {0};
 
   while (sp_input_waiting(m_pSerialPort) > 0)
   {
@@ -979,7 +979,7 @@ bool ZeDMDComm::SendChunks(uint8_t* pData, uint16_t size)
     }
     sent += status;
 
-    memset(ack, 0, CTRL_CHARS_HEADER_SIZE + 1);
+    memset(ack, 0, CTRL_CHARS_HEADER_SIZE + 2);
     status = sp_blocking_read(m_pSerialPort, ack, CTRL_CHARS_HEADER_SIZE + 1, ZEDMD_COMM_SERIAL_READ_TIMEOUT);
 
     if (status < (CTRL_CHARS_HEADER_SIZE + 1) || memcmp(ack, CTRL_CHARS_HEADER, CTRL_CHARS_HEADER_SIZE) != 0 ||
@@ -988,10 +988,9 @@ bool ZeDMDComm::SendChunks(uint8_t* pData, uint16_t size)
       if (memcmp(ack, guru, 4) == 0 || memcmp(&ack[1], guru, 4) == 0 || memcmp(&ack[2], guru, 4) == 0)
       {
         Log("ZeDMD %s", ack);
-        uint8_t message[64];
         while (sp_input_waiting(m_pSerialPort) > 0)
         {
-          memset(message, ' ', 64);
+          memset(message, 0, 65);
           if (sp_nonblocking_read(m_pSerialPort, message, 64) > 0)
           {
             Log("%s", message);

diff --git a/src/client.cpp b/src/client.cpp
@@ -545,6 +545,7 @@ int main(int argc, char* argv[])
   if (save)
   {
     pZeDMD->SaveSettings();
+    pZeDMD->Reset();
   }
 
   if (opt_led_test)