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author | Nao Pross <naopross@thearcway.org> | 2018-10-30 11:41:24 +0100 |
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committer | Nao Pross <naopross@thearcway.org> | 2018-10-30 11:41:24 +0100 |
commit | 43be150dc6e84f6f6eeb071cd3cdb7fc21125d60 (patch) | |
tree | 541fd3d690c1bdfd7b68d684029a400b80f4aa06 /sw/z80/drivers/pio.c | |
parent | Add datasheets for ATmega328 and 74LS259 (diff) | |
download | z80uPC-43be150dc6e84f6f6eeb071cd3cdb7fc21125d60.tar.gz z80uPC-43be150dc6e84f6f6eeb071cd3cdb7fc21125d60.zip |
Move sw to sw-old and hw to hw-altium, add kicad files
Diffstat (limited to 'sw/z80/drivers/pio.c')
-rw-r--r-- | sw/z80/drivers/pio.c | 84 |
1 files changed, 0 insertions, 84 deletions
diff --git a/sw/z80/drivers/pio.c b/sw/z80/drivers/pio.c deleted file mode 100644 index f396e43..0000000 --- a/sw/z80/drivers/pio.c +++ /dev/null @@ -1,84 +0,0 @@ -#include "pio.h" - -#ifdef PIO_ASM_INTERFACE -// TODO: set inline -void _pio_write(uint8_t reg, uint8_t data) -{ - __asm - ;; pop function arguments data in h, reg in a (l) - pop hl - ld a, l - ;; add ADDR_DEV_PIO to get the device address - add a, #ADDR_DEV_PIO - ld c, a - ;; load data - out (c), h - __endasm; -} - -inline uint8_t _pio_read(uint8_t reg) -{ - // TODO: check "dec sp" - __asm - ;; pop function argument - dec sp - pop hl - ld a, l - ;; add ADDR_DEV_PIO to get the device address - add a, #ADDR_DEV_PIO - ld c, a - ;; read data - in l, (c) - ret - __endasm; -} - -#else - -inline void _pio_write(uint8_t reg, uint8_t data) -{ - *((uint8_t *) (ADDR_DEV_PIO + reg)) = data; -} - -inline uint8_t _pio_read(uint8_t reg) -{ - return *((uint8_t *) (ADDR_DEV_PIO + reg)); -} - -#endif - -void pio_set_mode(int port, int mode, uint8_t io) -{ - // 0x0F is a control sequence to set mode - _pio_write((PIO_REG_CTRL + port), ((mode << 6) | 0x0F)); - - // this mode requires an additional argument that sets - // a mode for each pin - if (mode == PIO_MODE_BIT_IO) { - _pio_write((PIO_REG_CTRL + port), io); - } -} - -void pio_set_interrupts(int port, int control) -{ - // 0x07 is a control sequence to set interrupts - _pio_write((PIO_REG_CTRL + port), (control<<4 | 0x07)); -} - -void pio_set_interrupts_mask(int port, int control, uint8_t mask) -{ - // 0x17 is a control sequence to set interrupts - // AND interpret the next byte as a bitmask - _pio_write((PIO_REG_CTRL + port),(control | 0x97)); - _pio_write((PIO_REG_CTRL + port), mask); -} - -uint8_t pio_read(int port) -{ - return _pio_read((PIO_REG_DATA + port)); -} - -void pio_write(int port, uint8_t data) -{ - _pio_write((PIO_REG_DATA + port), data); -} |