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tools: give the driver control over CLKM (for ATmega32U2 boards)

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- include/atrf.h (atrf_set_clkm), lib/atrf.c (atrf_set_clkm): set or
  disable CLKM
- lib/driver.h (atrf_set_clkm_generic), lib/atrf.c (atrf_set_clkm_generic):
  generic function to set CLKM without restrictions
- lib/driver.h (struct atrf_driver): added driver operation "set_clkm"
  to set CLKM
- lib/atusb.c (atusb_set_clkm, atusb_driver): restrict CLKM on ATmega32U2
  boards
- atrf-txrx/atrf-txrx.c (init_txrx): use atrf_set_clkm to set CLKM
- atrf-txrx/atrf-txrx.c (init_txrx, main): pass CLKM frequency in MHz
  instead of code point
This commit is contained in:
Werner Almesberger
2011-02-10 23:11:34 -03:00
parent e73ca5fcd5
commit b0c15b7e7c
5 changed files with 111 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
tools/atrf-txrx/atrf-txrx.c
View File

@@ -83,7 +83,7 @@ static volatile int run = 1;
* >0 output 2^(clkm-1) MHz signal
*/
static struct atrf_dsc *init_txrx(int trim, unsigned clkm)
static struct atrf_dsc *init_txrx(int trim, unsigned mhz)
{
struct atrf_dsc *dsc;
@@ -101,11 +101,11 @@ static struct atrf_dsc *init_txrx(int trim, unsigned clkm)
atrf_reg_write(dsc, REG_XOSC_CTRL, XTAL_MODE_EXT << XTAL_MODE_SHIFT);
#endif
if (!clkm)
atrf_reg_write(dsc, REG_TRX_CTRL_0, 0); /* disable CLKM */
else
atrf_reg_write(dsc, REG_TRX_CTRL_0,
(PAD_IO_8mA << PAD_IO_CLKM_SHIFT) | clkm);
if (!atrf_set_clkm(dsc, mhz))
if (mhz) {
atrf_close(dsc);
exit(1);
}
/* We want to see all interrupts, not only the ones we're expecting. */
atrf_reg_write(dsc, REG_IRQ_MASK, 0xff);
@@ -616,7 +616,7 @@ int main(int argc, char *const *argv)
double pause_s = 0;
char *end;
int c, freq;
unsigned tmp, clkm = 0;
unsigned clkm = 0;
int status = 0;
const char *pcap_file = NULL;
struct atrf_dsc *dsc;
@@ -668,14 +668,10 @@ int main(int argc, char *const *argv)
usage(*argv);
break;
case 'C':
tmp = strtol(optarg, &end, 0);
clkm = strtol(optarg, &end, 0);
if (*end)
usage(*argv);
if (!tmp)
usage(*argv);
for (clkm = 1; !(tmp & 1); tmp >>= 1)
clkm++;
if (tmp != 1 || clkm > 5)
if (!clkm)
usage(*argv);
break;
case 'E':