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tools/lib/atusb.c: added SRAM access to atusb driver

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- atusb.c (atusb_sram_write, atusb_sram_read): SRAM access functions
- atusb.c (atusb_driver): added new functions to driver operations
This commit is contained in:
Werner Almesberger 2011-06-03 14:26:47 -03:00
parent b733431847
commit 4aff7af370
1 changed files with 41 additions and 0 deletions
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41
tools/lib/atusb.c
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@ -220,6 +220,45 @@ static int atusb_buf_read(void *handle, void *buf, int size)
}
/* ----- SRAM access ------------------------------------------------------- */
static void atusb_sram_write(void *handle, uint8_t addr, uint8_t value)
{
struct atusb_dsc *dsc = handle;
int res;
if (dsc->error)
return;
res = usb_control_msg(dsc->dev, TO_DEV, ATUSB_SRAM_WRITE, 0, addr,
&value, 1, 1000);
if (res < 0) {
fprintf(stderr, "ATUSB_SRAM_WRITE: %d\n", res);
dsc->error = 1;
}
}
static uint8_t atusb_sram_read(void *handle, uint8_t addr)
{
struct atusb_dsc *dsc = handle;
uint8_t value = 0;
int res;
if (dsc->error)
return 0;
res = usb_control_msg(dsc->dev, FROM_DEV, ATUSB_SRAM_READ, 0, addr,
(void *) &value, 1, 1000);
if (res < 0) {
fprintf(stderr, "ATUSB_SRAM_READ: %d\n", res);
dsc->error = 1;
}
return value;
}
/* ----- RF interrupt ------------------------------------------------------ */
@ -315,5 +354,7 @@ struct atrf_driver atusb_driver = {
.reg_read = atusb_reg_read,
.buf_write = atusb_buf_write,
.buf_read = atusb_buf_read,
.sram_write = atusb_sram_write,
.sram_read = atusb_sram_read,
.interrupt = atusb_interrupt,
};