knowledge:3d_print:2022102301

差别

这里会显示出您选择的修订版和当前版本之间的差别。

到此差别页面的链接

--- knowledge:3d_print:2022102301 [2023/06/14 12:32] – 弘毅
+++ knowledge:3d_print:2022102301 [2023/06/14 12:34] (当前版本) – 弘毅
@@ 行 62: / 行 62: @@
 int8_t xflash_init(void)
 {
-	_CS_HIGH();
+  _CS_HIGH();
-	SET_OUTPUT(XFLASH_PIN_CS);
+  SET_OUTPUT(XFLASH_PIN_CS);
-	XFLASH_SPI_ENTER();
+  XFLASH_SPI_ENTER();
-	if (!xflash_mfrid_devid()) return 0;
+  if (!xflash_mfrid_devid()) return 0;
-	return 1;
+  return 1;
 }
 </code>
@@ 行 74: / 行 74: @@
 int xflash_mfrid_devid(void)
 {
-	_CS_LOW();
+  _CS_LOW();
-	_SPI_TX(_CMD_MFRID_DEVID);           // send command 0x90
+  _SPI_TX(_CMD_MFRID_DEVID);           // send command 0x90
-	uint8_t cnt = 3;                     // 3 address bytes
+  uint8_t cnt = 3;                     // 3 address bytes
-	while (cnt--)                        // send address bytes
+  while (cnt--)                        // send address bytes
-		_SPI_TX(0x00);
+    _SPI_TX(0x00);
-	uint8_t xflash_mfrid = _SPI_RX();  // receive mfrid
+  uint8_t xflash_mfrid = _SPI_RX();  // receive mfrid
-	uint8_t xflash_devid = _SPI_RX();  // receive devid
+  uint8_t xflash_devid = _SPI_RX();  // receive devid
-	_CS_HIGH();
+  _CS_HIGH();
-	return
+  return
-		((xflash_mfrid == _MFRID_W25X20CL) && (xflash_devid == _DEVID_W25X20CL)) ||
+    ((xflash_mfrid == _MFRID_W25X20CL) && (xflash_devid == _DEVID_W25X20CL)) ||
-		((xflash_mfrid == _MFRID_GD25Q20C) && (xflash_devid == _DEVID_GD25Q20C));
+    ((xflash_mfrid == _MFRID_GD25Q20C) && (xflash_devid == _DEVID_GD25Q20C));
 }
 </code>
 通过测试，发现该问题会有LCD2004硬件的SD卡CS到主控接触不良引起。当LCD2004的SD卡的CS到主控接触不良时，就会引起这个错误。

knowledge/3d_print/2022102301.1686745967.txt · 最后更改: 2023/06/14 12:32 由弘毅