+ Added support for SIO (Serial Input Output).

* On SystemLoadFileToBuffer(), files can be now uploaded to PSX using QPSXSerial.

1 files changed, 102 insertions, 0 deletions

diff --git a/Source/Serial.c b/Source/Serial.c
new file mode 100644
index 0000000..714581d
--- /dev/null
+++ b/Source/Serial.c
@@ -0,0 +1,102 @@
+/* *************************************
+ * 	Includes
+ * *************************************/
+
+#include "Serial.h"
+
+/* *************************************
+ * 	Defines
+ * *************************************/
+
+#define SERIAL_BAUDRATE 115200
+#define SERIAL_TX_RX_TIMEOUT 20000
+#define SERIAL_RX_FIFO_EMPTY 0
+#define SERIAL_TX_NOT_READY 0
+#define SERIAL_PRINTF_INTERNAL_BUFFER_SIZE 256
+
+/* **************************************
+ * 	Structs and enums					*
+ * *************************************/
+
+typedef enum
+{
+    SERIAL_STATE_INIT = 0,
+    SERIAL_STATE_STANDBY,
+    SERIAL_STATE_WRITING_INITIAL
+}SERIAL_STATE;
+
+/* *************************************
+ * 	Local Variables
+ * *************************************/
+
+static volatile SERIAL_STATE SerialState;
+
+/* *************************************
+ * 	Local Prototypes
+ * *************************************/
+
+void SerialInit(void)
+{
+    SIOStart(115200);
+}
+
+bool SerialRead(uint8_t* ptrArray, size_t nBytes)
+{
+    if(nBytes == 0)
+    {
+        dprintf("SerialRead: invalid size %d\n", nBytes);
+        return false;
+    }
+
+    do
+    {
+        //uint16_t timeout = SERIAL_TX_RX_TIMEOUT;
+        
+        while( (SIOCheckInBuffer() == SERIAL_RX_FIFO_EMPTY)); // Wait for RX FIFO not empty
+
+        *(ptrArray++) = SIOReadByte();
+    }while(--nBytes);
+
+    return true;
+}
+
+bool SerialWrite(void* ptrArray, size_t nBytes)
+{
+
+    if(nBytes == 0)
+    {
+        dprintf("SerialWrite: invalid size %d\n", nBytes);
+        return false;
+    }
+
+    do
+    {
+        //uint16_t timeout = SERIAL_TX_RX_TIMEOUT;
+
+        while( (SIOCheckOutBuffer() == SERIAL_TX_NOT_READY)); // Wait for TX FIFO empty.
+
+        SIOSendByte(*(uint8_t*)ptrArray++);
+
+    }while(--nBytes);
+
+    return true;
+}
+
+#ifdef SERIAL_INTERFACE
+void Serial_printf(const char* str, ...)
+{
+    va_list ap;
+    int result;
+    static char internal_buffer[SERIAL_PRINTF_INTERNAL_BUFFER_SIZE];
+
+    va_start(ap, str);
+
+    result = vsnprintf(	internal_buffer,
+						SERIAL_PRINTF_INTERNAL_BUFFER_SIZE,
+						str,
+						ap	);
+
+    SerialWrite(internal_buffer, result);
+}
+#endif // SERIAL_INTERFACE
+