SDIO fix

Marlin/src/HAL/STM32F1/sdio.cpp

@@ -95,6 +95,7 @@ uint32_t SDIO_ReadBlock_DMA(uint32_t blockAddress, uint8_t *data) {
   dma_setup_transfer(SDIO_DMA_DEV, SDIO_DMA_CHANNEL, &SDIO->FIFO, DMA_SIZE_32BITS, data, DMA_SIZE_32BITS, DMA_MINC_MODE);
   dma_set_num_transfers(SDIO_DMA_DEV, SDIO_DMA_CHANNEL, 128);
   dma_clear_isr_bits(SDIO_DMA_DEV, SDIO_DMA_CHANNEL);
+  dma_set_priority(SDIO_DMA_DEV,SDIO_DMA_CHANNEL,DMA_PRIORITY_VERY_HIGH);
   dma_enable(SDIO_DMA_DEV, SDIO_DMA_CHANNEL);
 
   sdio_setup_transfer(SDIO_DATA_TIMEOUT * (F_CPU / 1000U), 512, SDIO_BLOCKSIZE_512 | SDIO_DCTRL_DMAEN | SDIO_DCTRL_DTEN | SDIO_DIR_RX);
@@ -106,7 +107,8 @@ uint32_t SDIO_ReadBlock_DMA(uint32_t blockAddress, uint8_t *data) {
   }
 
   while (!SDIO_GET_FLAG(SDIO_STA_DATAEND | SDIO_STA_TRX_ERROR_FLAGS)) {}
-
+  while(SDIO_GET_FLAG(SDIO_STA_RXACT) || SDIO_GET_FLAG(SDIO_STA_RXDAVL)){};
+    
   ret_val = SDIO->STA;
 
   dma_disable(SDIO_DMA_DEV, SDIO_DMA_CHANNEL);

Marlin/src/HAL/STM32F1/sdio.h

@@ -100,9 +100,9 @@
 #define SDIO_DATA_TIMEOUT                    100U           /* Read data transfer timeout */
 #define SDIO_WRITE_TIMEOUT                   200U           /* Write data transfer timeout */
 
-// #define SDIO_CLOCK                           18000000       /* 18 MHz */
+#define SDIO_CLOCK                           18000000       /* 18 MHz */
 // Setting SDIO_CLOCK to 4.5 MHz fixes random print interruptions with moving to endstops
-#define SDIO_CLOCK                           4500000 /* 4.5 MHz */
+//#define SDIO_CLOCK                           4500000 /* 4.5 MHz */
 
 // ------------------------
 // Types

Marlin/src/module/mks_wifi/mkf_test_sdio.cpp

@@ -0,0 +1,23 @@
+#include "mks_test_sdio.h"
+#include "../../MarlinCore.h"
+#include "../../inc/MarlinConfig.h"
+#include "../../libs/Segger/log.h"
+#include "../../sd/cardreader.h"
+
+
+void mks_test_sdio(void){
+    uint8_t data[512];
+    CardReader::mount();
+
+    DEBUG("Start sdio test");
+    
+    for(uint32_t i=0; i<100000; i++){
+        if((i%1000) == 0){
+            DEBUG("Progress %d blocks",i);
+        }
+        SDIO_ReadBlock(i,data);
+    }
+    
+    DEBUG("Finish sdio test");
+
+}

Marlin/src/module/mks_wifi/mks_test_sdio.h

@@ -0,0 +1,6 @@
+#ifndef MKS_WIFI_SDIOTEST_H
+#define MKS_WIFI_SDIOTEST_H
+
+void mks_test_sdio(void);
+
+#endif

Marlin/src/module/mks_wifi/mks_wifi.cpp

@@ -2,6 +2,7 @@
 
 #include "../../lcd/ultralcd.h"
 #include "mks_wifi_sd.h"
+#include "mks_test_sdio.h"
 
 uint8_t mks_in_buffer[ESP_PACKET_DATA_MAX_SIZE];
 uint8_t mks_out_buffer[ESP_PACKET_DATA_MAX_SIZE];
@@ -30,6 +31,10 @@ void mks_wifi_init(void){
 	safe_delay(1000);	
 	WRITE(MKS_WIFI_IO4, LOW);
 
+	#ifdef SDIO_TEST_AT_STARTUP
+	mks_test_sdio();
+	#endif
+	
 	#ifdef LIST_FILES_AT_STARTUP
 	mks_wifi_sd_deinit(); 
 	mks_wifi_sd_init();  

Marlin/src/module/mks_wifi/mks_wifi.h

@@ -6,6 +6,8 @@
 #include "../../libs/Segger/log.h"
 #include "mks_wifi_settings.h"
 
+//#define SDIO_TEST_AT_STARTUP		
+
 #define MKS_WIFI_SERIAL_NUM        (uint8_t)1
 
 #define WIFI_MODE_STA				(uint8_t)2