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authorUwe Hermann2011-01-03 01:12:07 +0100
committerUwe Hermann2011-01-03 01:12:07 +0100
commitca53311bfc3182212d53386c5f49f0bc57350266 (patch)
tree2a81b20c486717d0fea3d1987549c15d2bb529b2 /examples/stm32/stm32-h103/usb_cdcacm
parent05f66cde4cc2d9e57e495f6d8b51619f08191c68 (diff)
Use __asm__("nop") in the loop-based delays.
Since we recently switched from -O0 to -Os, an increase in the loop count as well as the addition of __asm__("nop") is required (so that the loop doesn't get optimized/removed). The real fix is to add a proper timer-based delay function, of course. Also, fix a bunch of cosmetic issues and typos.
Diffstat (limited to 'examples/stm32/stm32-h103/usb_cdcacm')
-rw-r--r--examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c b/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c
index fa545a7..fd8847c 100644
--- a/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c
+++ b/examples/stm32/stm32-h103/usb_cdcacm/cdcacm.c
@@ -224,6 +224,8 @@ static void cdcacm_set_config(u16 wValue)
int main(void)
{
+ int i;
+
rcc_clock_setup_in_hsi_out_48mhz();
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
@@ -236,7 +238,8 @@ int main(void)
usbd_init(&dev, &config, usb_strings);
usbd_register_set_config_callback(cdcacm_set_config);
- {int i; for (i=0;i<0x80000;i++);}
+ for (i = 0; i < 0x800000; i++)
+ __asm__("nop");
gpio_clear(GPIOC, GPIO11);
while (1)