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-rw-r--r--sw/z80/kernel/include/usart.h149
1 files changed, 0 insertions, 149 deletions
diff --git a/sw/z80/kernel/include/usart.h b/sw/z80/kernel/include/usart.h
deleted file mode 100644
index 3e5c070..0000000
--- a/sw/z80/kernel/include/usart.h
+++ /dev/null
@@ -1,149 +0,0 @@
-#ifndef __USART_H__
-#define __USART_H__
-
-#include "types.h"
-#include "devices.h"
-
-#include "string.h"
-
-// baudrate clock divisors
-// values from TL16C550C datasheet (table 9 for 1.8432 MHz crystal)
-#define USART_BAUDRATE_50 2304
-#define USART_BAUDRATE_75 1536
-#define USART_BAUDRATE_110 1047
-#define USART_BAUDRATE_134_5 857
-#define USART_BAUDRATE_150 768
-#define USART_BAUDRATE_300 384
-#define USART_BAUDRATE_600 192
-#define USART_BAUDRATE_1200 96
-#define USART_BAUDRATE_1800 64
-#define USART_BAUDRATE_2000 58
-#define USART_BAUDRATE_2400 48
-#define USART_BAUDRATE_3600 32
-#define USART_BAUDRATE_4800 24
-#define USART_BAUDRATE_7200 16
-#define USART_BAUDRATE_9600 12
-#define USART_BAUDRATE_19200 6
-#define USART_BAUDRATE_38400 3
-#define USART_BAUDRATE_56000 3
-
-// parity
-#define USART_PARITY_NONE 0
-#define USART_PARITY_EVEN 1
-#define USART_PARITY_ODD 2
-
-// stop bits
-#define USART_STOP_BITS_1 10
-#define USART_STOP_BITS_15 15
-#define USART_STOP_BITS_2 20
-
-// word lenght
-#define USART_WORD_LENGTH_5 0
-#define USART_WORD_LENGTH_6 1
-#define USART_WORD_LENGTH_7 2
-#define USART_WORD_LENGTH_8 3
-
-// autoflow
-#define USART_AUTOFLOW_ALL 3
-#define USART_AUTOFLOW_CTS 2
-#define USART_AUTOFLOW_OFF 0
-
-
-/* this structure is only for internal usage */
-struct _usart_device
-{
- register_t buffer; // also used as LSB for divisor latch
-
- struct IER
- {
- volatile int received_data_interrupt :1;
- volatile int transmitter_empty_interrupt :1;
- volatile int receiver_line_status_interrupt :1;
- volatile int modem_status_interrupt :1;
- volatile int reserved :4;
- } IER;
-
- struct IIR
- {
- volatile int interrupt_pending :1;
- volatile int interrupt_id :3;
- volatile int reserved :2;
- volatile int fifos :2;
- } IIR;
-
- struct FCR
- {
- volatile int fifo_enable :1;
- volatile int receiver_fifo_rst :1;
- volatile int trasmitter_fifo_rst :1;
- volatile int dma_mode_select :1;
- volatile int reserved :1;
- volatile int receiver_trigger :2;
- } FCR;
-
- struct LCR
- {
- volatile int word_length :2;
- volatile int stop_bits :1;
- volatile int parity :1;
- volatile int even_parity :1;
- volatile int stick_parity :1;
- volatile int break_control :1;
- volatile int divisor_latch_access :1;
- } LCR;
-
- struct MCR
- {
- volatile int data_terminal_ready :1;
- volatile int request_to_send :1;
- volatile int out1;
- volatile int out2;
- volatile int loop;
- volatile int autoflow :1;
- volatile int reserved :2;
- } MCR;
-
- struct LSR
- {
- volatile int data_ready :1;
- volatile int overrun_error :1;
- volatile int parity_error :1;
- volatile int framing_error :1;
- volatile int break_interrupt :1;
- volatile int transmitter_holder_empty :1;
- volatile int transmitter_empty :1;
- volatile int fifo_recv_error :1;
- } LSR;
-
- struct MSR
- {
- volatile int delta_cts :1;
- volatile int delta_data_set_ready :1;
- volatile int trailing_edge_ring_indicator :1;
- volatile int delta_data_carrier_detect :1;
- volatile int clear_to_send :1;
- volatile int data_set_ready :1;
- volatile int ring_indicator :1;
- volatile int data_carrier_detect :1;
- } MSR;
-
- register_t scratch;
-};
-
-
-// setup functions (wrappers)
-void usart_set_baudrate(uint16_t baudrate);
-void usart_set_parity(int mode);
-void usart_set_stop_bits(int count);
-void usart_set_word_length(int length);
-void usart_set_autoflow(int mode);
-
-inline void usart_init(uint16_t baudrate, int parity, int stop_bits);
-
-void usart_transmit(uint8_t data);
-uint8_t usart_receive();
-
-int usart_write(uint8_t *data, size_t size);
-int usart_read(uint8_t *buffer, size_t count);
-
-#endif // __USART__H__