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authorNao Pross <naopross@thearcway.org>2017-06-10 17:47:36 +0200
committerNao Pross <naopross@thearcway.org>2017-06-10 17:47:36 +0200
commitb96b0d6c00ea72895582ec14f9c7dccd3fe7062a (patch)
tree1d92b474bfd2aaf7d6cc951b7ab55cfc2f0d435e /sw/z80/kernel/include
parentadd serial interface and a few std library functions (diff)
downloadz80uPC-b96b0d6c00ea72895582ec14f9c7dccd3fe7062a.tar.gz
z80uPC-b96b0d6c00ea72895582ec14f9c7dccd3fe7062a.zip
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.
Diffstat (limited to 'sw/z80/kernel/include')
-rw-r--r--sw/z80/kernel/include/pio.h27
1 files changed, 22 insertions, 5 deletions
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);