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| author | Xavi Del Campo <xavi.dcr@tutanota.com> | 2020-01-31 10:32:23 +0100 |
|---|---|---|
| committer | Xavi Del Campo <xavi.dcr@tutanota.com> | 2020-01-31 10:32:23 +0100 |
| commit | 7c24e9a9b02b04dcaf9507acb94091ea70a2c02d (patch) | |
| tree | c28d0748652ad4b4222309e46e6cfc82c0906220 /libpsx/include/psxsio.h | |
| parent | a2b7b6bb1cc2f4a3258b7b2dbc92399d151f864d (diff) | |
| download | psxsdk-7c24e9a9b02b04dcaf9507acb94091ea70a2c02d.tar.gz | |
Imported pristine psxsdk-20190410 from official repo
Diffstat (limited to 'libpsx/include/psxsio.h')
| -rw-r--r-- | libpsx/include/psxsio.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/libpsx/include/psxsio.h b/libpsx/include/psxsio.h new file mode 100644 index 0000000..9756f1d --- /dev/null +++ b/libpsx/include/psxsio.h @@ -0,0 +1,121 @@ +#ifndef _PSXSIO_H
+#define _PSXSIO_H
+
+/** Bitrate reload factors */
+
+enum sio_reload_factors
+{
+ /** STOP */
+ SIO_REL_STOP = 0,
+ /** MUL1 */
+ SIO_REL_MUL1 = 1,
+ /** MUL16 */
+ SIO_REL_MUL16 = 2,
+ /** MUL64 */
+ SIO_REL_MUL64 = 3
+};
+
+/** Character (data) length settings */
+
+enum sio_data_len
+{
+ /** Data Length = 5 bits */
+ SIO_DATA_LEN_5 = 0,
+ /** Data Length = 6 bits */
+ SIO_DATA_LEN_6 = 1,
+ /** Data Length = 7 bits */
+ SIO_DATA_LEN_7 = 2,
+ /** Data Length = 8 bits */
+ SIO_DATA_LEN_8 = 3
+};
+
+/** Stop bit length settings */
+
+enum sio_stop_bit
+{
+ /** Length = 1 bit */
+ SIO_STOP_BIT_1 = 1,
+ /** Length = 1.5 bits */
+ SIO_STOP_BIT_1_5 = 2,
+ /** Length = 2 bits */
+ SIO_STOP_BIT_2 = 3
+};
+
+/** Parity settings */
+
+enum sio_parity
+{
+ /** No parity */
+ SIO_PARITY_NONE = 0,
+ /** Odd parity */
+ SIO_PARITY_ODD = 1,
+ /** Even parity */
+ SIO_PARITY_EVEN = 3
+};
+
+/** SIO FIFO Buffer (TX/RX) Register [Read/Write] */
+#define SIO_TX_RX *((volatile unsigned char*)0x1F801050)
+/** SIO Status Register [Read Only] */
+#define SIO_STAT *((volatile unsigned short*)0x1F801054)
+/** SIO Mode Register [Read/Write] */
+#define SIO_MODE *((volatile unsigned short*)0x1F801058)
+/** SIO Control Register [Read/Write] */
+#define SIO_CTRL *((volatile unsigned short*)0x1F80105A)
+/** SIO Baud Rate Register [Read/Write] */
+#define SIO_BPSV *((volatile unsigned short*)0x1F80105E)
+
+
+/**
+ * Initialize SIO communication at the specified bitrate (baud rate).
+ * Mode is 8N1. (Data Length = 8 bit, No parity, Stop bit Length = 1 bit)
+ * @param bitrate Bitrate (baud rate)
+ */
+void SIOStart(int bitrate);
+
+/**
+ * Same as SIOStart() but with more control.
+ * IMPORTANT: Must use defined macros.
+ * For example setting datalength to 5 should be done with "SIO_DATA_LEN_5"
+ * and not by simply passing 5 as an argument.
+ *
+ * @param bitrate Bit rate (baud rate)
+ * @param datalength Character (data) length
+ * @param parity Parity
+ * @param stopbit Stop bit length
+ */
+void SIOStartEx(int bitrate, int datalength, int parity, int stopbit);
+
+/**
+ * Shuts down SIO communication.
+ */
+void SIOStop(void);
+
+/**
+ * Read a single byte from the input buffer.
+ * @return Data byte from input buffer
+ */
+unsigned char SIOReadByte(void);
+
+/**
+ * Send a single byte to the output buffer.
+ * @param data Byte to send
+ */
+void SIOSendByte(unsigned char data);
+
+/**
+ * Check if any data is waiting in the input buffer.
+ * Must be used when fetching data otherwise incorrect data could be read (usually 0x00).
+ * @return Non-zero if there is data waiting in the input buffer, zero otherwise.
+ */
+int SIOCheckInBuffer(void);
+
+/**
+ * Check if port is ready to send data (previous operation finished).
+ * Must be used when sending data as the output buffer is only 2 bytes long.
+ * @return Non-zero if port is ready to send data, zero otherwise.
+ */
+int SIOCheckOutBuffer(void);
+
+
+
+#endif
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