From 4a7f45ee28ac0799ba1ca93fd1683f7858efc54a Mon Sep 17 00:00:00 2001 From: Nao Pross Date: Fri, 2 Jun 2017 16:22:26 +0200 Subject: add serial interface and a few std library functions changes in usart: - new functions to setup the serial comunication settings such as baudrate, parity and stop bits - init function with most common values - transmit and receive functions each with a wrapper to send data blocks changes in libc: - new file stdio.c with basic implementation of putch, printf still a prototype - new file string.c with memcpy() function --- sw/z80/kernel/include/pio.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 sw/z80/kernel/include/pio.h (limited to 'sw/z80/kernel/include/pio.h') diff --git a/sw/z80/kernel/include/pio.h b/sw/z80/kernel/include/pio.h new file mode 100644 index 0000000..8d72ab0 --- /dev/null +++ b/sw/z80/kernel/include/pio.h @@ -0,0 +1,18 @@ +#ifndef __PIO_H__ +#define __PIO_H__ + +#define PIO_A 0 +#define PIO_B 1 + + +void pio_data(int port, uint8_t data); +void pio_command(int port, uint8_t cmd); + +uint8_t pio_read_data(int port); + +inline int pio_read_pin(int port, uint8_t pin); +inline void pio_write_pin(int port, uint8_t pin); + +// TODO: implement mode (in/out/both) and interrupt vector + +#endif // __PIO_H__ -- cgit v1.2.1 From b96b0d6c00ea72895582ec14f9c7dccd3fe7062a Mon Sep 17 00:00:00 2001 From: Nao Pross Date: Sat, 10 Jun 2017 17:47:36 +0200 Subject: add port interface header, api still to implement fix for bug in usart.c, in function usart_write() that checked the trasmission_empty register at the wrong time causing it to overwrite the buffer. --- sw/z80/kernel/include/pio.h | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) (limited to 'sw/z80/kernel/include/pio.h') diff --git a/sw/z80/kernel/include/pio.h b/sw/z80/kernel/include/pio.h index 8d72ab0..5d289ca 100644 --- a/sw/z80/kernel/include/pio.h +++ b/sw/z80/kernel/include/pio.h @@ -1,14 +1,31 @@ #ifndef __PIO_H__ #define __PIO_H__ -#define PIO_A 0 -#define PIO_B 1 +#include "devices.h" +#include "types.h" +#define PIO_A 0 +#define PIO_B 1 -void pio_data(int port, uint8_t data); -void pio_command(int port, uint8_t cmd); +#define PIO_MODE_0 0 +#define PIO_MODE_1 1 +#define PIO_MODE_2 2 +#define PIO_MODE_3 3 -uint8_t pio_read_data(int port); +#define PIO_INT_ACTIVE_HIGH (1<<5) +#define PIO_INT_AND_MODE (1<<6) +#define PIO_INT_ENABLE (1<<7) + + +void _pio_data(int port, uint8_t data); +void _pio_command(int port, uint8_t cmd); + +void pio_set_mode(int port, int mode); +void pio_set_interrupts(int port, int control); +void pio_set_interrupts_mask(int port, uint8_t mask); +void pio_set_io(int port, uint8_t io); + +// uint8_t pio_read_data(int port); inline int pio_read_pin(int port, uint8_t pin); inline void pio_write_pin(int port, uint8_t pin); -- cgit v1.2.1