make SPI to HI-Z when idle

DeqingSun · Dec 14, 2023 · e623770 · e623770
1 parent 1f7bfe1
commit e623770
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Showing 2 changed files with 3 additions and 1 deletion.
diff --git a/...no/ch55x/libraries/Generic_Examples/examples/05.USB/USBtinySPI_CH552/USBtinySPI_CH552.ino b/...no/ch55x/libraries/Generic_Examples/examples/05.USB/USBtinySPI_CH552/USBtinySPI_CH552.ino
@@ -57,7 +57,7 @@ void setup() {
   P1_DIR_PU &= ~( (1 << 5) | (1 << 6) | (1 << 7) );
   P1_MOD_OC &= ~( (1 << 5) | (1 << 6) | (1 << 7) );
   SPI0_SETUP = 0;
-  SPI0_CTRL = 0x60;    //mode 0
+  SPI0_CTRL = 0;    //mode 0
   //RESET P1.1
   P1_DIR_PU &= ~( (1 << 1) );
   P1_MOD_OC &= ~( (1 << 1) );

diff --git a/...ibraries/Generic_Examples/examples/05.USB/USBtinySPI_CH552/src/tinySpiDWire/tinySpiFunc.c b/...ibraries/Generic_Examples/examples/05.USB/USBtinySPI_CH552/src/tinySpiDWire/tinySpiFunc.c
@@ -84,6 +84,7 @@ uint16_t tinySpiSetupHandler() {
     }
     // INIT SPI BUS
     P1_DIR_PU |= ((1 << 5) | (1 << 7));
+    SPI0_CTRL = bS0_MOSI_OE|bS0_SCK_OE;    //mode 0
     P1_DIR_PU |= ((1 << 1));
     P1_1 = 0; // Put reset pin to output low
     returnLen = 0;
@@ -101,6 +102,7 @@ uint16_t tinySpiSetupHandler() {
     // set all the pins to Hi-Z
     // SPI
     P1_DIR_PU &= ~((1 << 5) | (1 << 6) | (1 << 7));
+    SPI0_CTRL = 0;
     // RESET
     P1_DIR_PU &= ~((1 << 1));
     P1_1 = 1;