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[app][mdebug] make setclock work

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This commit is contained in:
Brian Swetland
2015-07-30 10:21:12 -07:00
parent a35aec6349
commit 9ad76f486a
1 changed files with 7 additions and 2 deletions
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9
app/mdebug/swd-sgpio.c
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@@ -45,7 +45,7 @@
#define GPIO_SWDIO GPIO(1,9)
#define GPIO_SWCLK GPIO(0,12)
static unsigned sgpio_div = 31;
static unsigned sgpio_div = 31; // 6MHz
static void gpio_init(void) {
pin_config(PIN_LED, PIN_MODE(0) | PIN_PLAIN);
@@ -345,7 +345,12 @@ int swd_write(unsigned reg, unsigned val) {
}
unsigned swd_set_clock(unsigned khz) {
return 6000;
unsigned div;
if (khz < 2000) khz = 2000;
if (khz > 48000) khz = 48000;
div = 192000 / khz;
sgpio_div = div - 1;
return 192000 / div;
}
void swd_hw_reset(int assert) {