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Reformat spacing/comments in src/ppi.c

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This commit is contained in:
Stefan Rueger
2024-08-18 01:54:21 +01:00
parent 68aa300a9f
commit 6f8758a37e
1 changed files with 52 additions and 79 deletions
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131
src/ppi.c
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@@ -16,13 +16,10 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined(WIN32)
#include <ac_cfg.h>
#if HAVE_PARPORT
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
@@ -31,11 +28,11 @@
#include <errno.h>
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
# include "freebsd_ppi.h"
#include "freebsd_ppi.h"
#elif defined(__linux__)
# include "linux_ppdev.h"
#elif defined(__sun__) || defined(__sun) /* Solaris */
# include "solaris_ecpp.h"
#include "linux_ppdev.h"
#elif defined(__sun__) || defined(__sun) // Solaris
#include "solaris_ecpp.h"
#endif
#include "avrdude.h"
@@ -49,46 +46,42 @@ enum {
PPI_SHADOWREAD
};
static int ppi_shadow_access(const union filedescriptor *fdp, int reg,
unsigned char *v, unsigned char action)
{
static int ppi_shadow_access(const union filedescriptor *fdp, int reg, unsigned char *v, unsigned char action) {
int shadow_num;
switch (reg) {
case PPIDATA:
shadow_num = 0;
break;
case PPICTRL:
shadow_num = 1;
break;
case PPISTATUS:
shadow_num = 2;
break;
default:
pmsg_error("invalid register=%d\n", reg);
return -1;
break;
case PPIDATA:
shadow_num = 0;
break;
case PPICTRL:
shadow_num = 1;
break;
case PPISTATUS:
shadow_num = 2;
break;
default:
pmsg_error("invalid register=%d\n", reg);
return -1;
break;
}
switch (action) {
case PPI_SHADOWREAD:
*v = cx->ppi_shadow[shadow_num];
break;
case PPI_READ:
DO_PPI_READ(fdp->ifd, reg, v);
cx->ppi_shadow[shadow_num]=*v;
break;
case PPI_WRITE:
cx->ppi_shadow[shadow_num]=*v;
DO_PPI_WRITE(fdp->ifd, reg, v);
break;
case PPI_SHADOWREAD:
*v = cx->ppi_shadow[shadow_num];
break;
case PPI_READ:
DO_PPI_READ(fdp->ifd, reg, v);
cx->ppi_shadow[shadow_num] = *v;
break;
case PPI_WRITE:
cx->ppi_shadow[shadow_num] = *v;
DO_PPI_WRITE(fdp->ifd, reg, v);
break;
}
return 0;
}
/*
* set the indicated bit of the specified register.
*/
// Set the indicated bit of the specified register
int ppi_set(const union filedescriptor *fdp, int reg, int bit) {
unsigned char v;
int rc;
@@ -97,16 +90,13 @@ int ppi_set(const union filedescriptor *fdp, int reg, int bit) {
v |= bit;
rc |= ppi_shadow_access(fdp, reg, &v, PPI_WRITE);
if (rc)
if(rc)
return -1;
return 0;
}
/*
* clear the indicated bit of the specified register.
*/
// Clear the indicated bit of the specified register
int ppi_clr(const union filedescriptor *fdp, int reg, int bit) {
unsigned char v;
int rc;
@@ -115,16 +105,13 @@ int ppi_clr(const union filedescriptor *fdp, int reg, int bit) {
v &= ~bit;
rc |= ppi_shadow_access(fdp, reg, &v, PPI_WRITE);
if (rc)
if(rc)
return -1;
return 0;
}
/*
* get the indicated bit of the specified register.
*/
// Get the indicated bit of the specified register
int ppi_get(const union filedescriptor *fdp, int reg, int bit) {
unsigned char v;
int rc;
@@ -132,15 +119,13 @@ int ppi_get(const union filedescriptor *fdp, int reg, int bit) {
rc = ppi_shadow_access(fdp, reg, &v, PPI_READ);
v &= bit;
if (rc)
if(rc)
return -1;
return v; /* v == bit */
return v; // v == bit
}
/*
* toggle the indicated bit of the specified register.
*/
// Toggle the indicated bit of the specified register
int ppi_toggle(const union filedescriptor *fdp, int reg, int bit) {
unsigned char v;
int rc;
@@ -149,31 +134,26 @@ int ppi_toggle(const union filedescriptor *fdp, int reg, int bit) {
v ^= bit;
rc |= ppi_shadow_access(fdp, reg, &v, PPI_WRITE);
if (rc)
if(rc)
return -1;
return 0;
}
/*
* get all bits of the specified register.
*/
// Get all bits of the specified register
int ppi_getall(const union filedescriptor *fdp, int reg) {
unsigned char v;
int rc;
rc = ppi_shadow_access(fdp, reg, &v, PPI_READ);
if (rc)
if(rc)
return -1;
return v; /* v == bit */
return v; // v == bit
}
/*
* set all bits of the specified register to val.
*/
// Set all bits of the specified register to val
int ppi_setall(const union filedescriptor *fdp, int reg, int val) {
unsigned char v;
int rc;
@@ -181,43 +161,36 @@ int ppi_setall(const union filedescriptor *fdp, int reg, int val) {
v = val;
rc = ppi_shadow_access(fdp, reg, &v, PPI_WRITE);
if (rc)
if(rc)
return -1;
return 0;
}
void ppi_open(const char *port, union filedescriptor *fdp) {
int fd;
unsigned char v;
fd = open(port, O_RDWR);
if (fd < 0) {
if(fd < 0) {
pmsg_ext_error("cannot open port %s: %s\n", port, strerror(errno));
fdp->ifd = -1;
return;
}
ppi_claim (fd);
ppi_claim(fd);
/*
* Initialize shadow registers
*/
ppi_shadow_access (fdp, PPIDATA, &v, PPI_READ);
ppi_shadow_access (fdp, PPICTRL, &v, PPI_READ);
ppi_shadow_access (fdp, PPISTATUS, &v, PPI_READ);
// Initialize shadow registers
ppi_shadow_access(fdp, PPIDATA, &v, PPI_READ);
ppi_shadow_access(fdp, PPICTRL, &v, PPI_READ);
ppi_shadow_access(fdp, PPISTATUS, &v, PPI_READ);
fdp->ifd = fd;
}
void ppi_close(const union filedescriptor *fdp) {
ppi_release (fdp->ifd);
ppi_release(fdp->ifd);
close(fdp->ifd);
}
#endif /* HAVE_PARPORT */
#endif /* !WIN32 */
#endif // HAVE_PARPORT
#endif // ! WIN32