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#include <revolution/euart.h>
#include <revolution/exi.h>
#include <revolution/os.h>
static BOOL __EUARTInitialized = FALSE;
static EUARTError __EUARTLastErrorCode = EUART_ERROR_NONE;
static BOOL __EUARTSendStop = FALSE;
static u32 Enabled = 0;
BOOL EUARTInit(void) {
BOOL enabled;
u8 val;
if (__EUARTInitialized) {
return TRUE;
}
if (!(OSGetConsoleType() & 0x10000000)) {
__EUARTLastErrorCode = EUART_ERROR_CANNOT_USE;
return FALSE;
}
enabled = OSDisableInterrupts();
val = -14;
if (!EXIWriteReg(0, 1, 0xB0000000, &val, 1)) {
__EUARTLastErrorCode = EUART_ERROR_INTERNAL;
OSRestoreInterrupts(enabled);
return FALSE;
}
val = -13;
if (!EXIWriteReg(0, 1, 0xB0000000, &val, 1)) {
__EUARTLastErrorCode = EUART_ERROR_INTERNAL;
OSRestoreInterrupts(enabled);
return FALSE;
}
OSRestoreInterrupts(enabled);
__EUARTInitialized = TRUE;
__EUARTLastErrorCode = EUART_ERROR_NONE;
__EUARTSendStop = FALSE;
return TRUE;
}
UARTError InitializeUART(UARTBaudRate rate) {
if (!(OSGetConsoleType() & 0x10000000)) {
Enabled = 0;
return kUARTConfigurationError;
} else {
Enabled = 0xA5FF005A;
return kUARTNoError;
}
}
static int QueueLength(void) {
u32 cmd, txCnt;
if (!EXISelect(0, 1, __EXIFreq)) {
return -1;
}
cmd = 0x30000100;
EXIImm(0, &cmd, 4, 1, NULL);
EXISync(0);
EXIImm(0, &txCnt, sizeof(txCnt), 0, NULL);
EXISync(0);
EXIDeselect(0);
return 32 - (u8)((txCnt >> 24) & 0x3F);
}
UARTError WriteUARTN(const void* buf, unsigned long len) {
u32 cmd;
int qLen;
UARTError error;
char* sendData = (char*)buf;
u32 uart_txd;
if (Enabled != 0xA5FF005A) {
return kUARTConfigurationError;
}
if (!__EUARTInitialized) {
if (!EUARTInit()) {
return kUARTConfigurationError;
}
}
if (!__EUARTInitialized) {
__EUARTLastErrorCode = EUART_ERROR_UNINITIALIZED;
return kUARTConfigurationError;
}
if (!EXILock(0, 1, 0)) {
return kUARTNoError;
}
{
char* p;
for (p = sendData; (p - buf) < len; p++) {
if (*p == '\n') {
*p = '\r';
}
}
}
error = kUARTNoError;
cmd = 0xB0000100;
while (len != 0) {
qLen = QueueLength();
if (qLen < 0) {
error = kUARTBufferOverflow;
break;
}
if (qLen != 32) {
continue;
}
if (!EXISelect(0, 1, __EXIFreq)) {
error = kUARTBufferOverflow;
break;
}
EXIImm(0, &cmd, 4, 1, NULL);
EXISync(0);
while ((qLen > 0) && (len > 0)) {
uart_txd = (u32)((*sendData & 0xFF) << 24);
EXIImm(0, &uart_txd, 4, 1, NULL);
EXISync(0);
sendData++;
qLen--;
len--;
}
EXIDeselect(0);
}
EXIUnlock(0);
return error;
}
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