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File random read example

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This commit is contained in:
Fabio Battaglia 2014-07-17 22:25:45 +02:00
parent b2bba8ca09
commit 7f579fd35b
1 changed files with 22 additions and 1 deletions
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23
esrc/fileop/fileop.c
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@ -7,7 +7,8 @@
#include "syslib/cpm_sysfunc.h"
#include "syslib/ansi_term.h"
static uint8_t dma_buffer[32 * 4];
#define BUF_SIZE 128
static uint8_t dma_buffer[BUF_SIZE];
void sys_init(void) {
cpm_sysfunc_init();
@ -15,6 +16,7 @@ void sys_init(void) {
void print_fcb(FCB *fcb_ptr);
void print_dir(CPM_DIR *dir_ptr);
void print_buf(void);
int main() {
uint8_t rval;
@ -62,6 +64,17 @@ int main() {
rval = cpm_performFileOp(fop_delFile, fcb_ptr);
cprintf(" ret.val %02X\n", rval);
cprintf("Trying a read... ");
memset(fcb_ptr, 0, sizeof(FCB));
cpm_setFCBname("fileop", "com", fcb_ptr);
rval = cpm_performFileOp(fop_open, fcb_ptr);
cpm_setDMAAddr((uint16_t)dma_buffer);
rval = cpm_performFileOp(fop_readRandRecord, fcb_ptr);
cprintf(" ret.val %02X\n", rval);
if (rval == 0) {
print_buf();
}
free(fcb_ptr);
return (EXIT_SUCCESS);
@ -84,3 +97,11 @@ void print_dir(CPM_DIR *dir_ptr) {
cprintf("\tname ->\t%c%c%c%c%c%c%c%c\n", dir_ptr->filename[0], dir_ptr->filename[1], dir_ptr->filename[2], dir_ptr->filename[3], dir_ptr->filename[4], dir_ptr->filename[5], dir_ptr->filename[6], dir_ptr->filename[7]);
cprintf("\ttype ->\t%c%c%c\n\n", dir_ptr->filetype[0], dir_ptr->filetype[1], dir_ptr->filetype[2]);
}
void print_buf(void) {
uint8_t idx;
for (idx = 0; idx < BUF_SIZE; idx++) {
if(!(idx%16)) cprintf("\n%04X --- ", idx/16);
cprintf("%02X ", dma_buffer[idx]);
}
}