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usbuart: Fix build error and clean up whitespace.

This commit is contained in:
Gareth McMullin 2013-04-27 13:14:22 -07:00
parent 43f7e7a3cf
commit e3f3171a33
1 changed files with 15 additions and 7 deletions
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22
src/platforms/stm32/usbuart.c
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@ -75,9 +75,12 @@ void usbuart_init(void)
/* Setup timer for running deferred FIFO processing */
USBUSART_TIM_CLK_EN();
timer_reset(USBUSART_TIM);
timer_set_mode(USBUSART_TIM, TIM_CR1_CKD_CK_INT, TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
timer_set_prescaler(USBUSART_TIM, rcc_ppre2_frequency/TIMER_FREQ_HZ*2 - 1);
timer_set_period(USBUSART_TIM, TIMER_FREQ_HZ/USBUART_RUN_FREQ_HZ - 1);
timer_set_mode(USBUSART_TIM, TIM_CR1_CKD_CK_INT,
TIM_CR1_CMS_EDGE, TIM_CR1_DIR_UP);
timer_set_prescaler(USBUSART_TIM,
rcc_ppre2_frequency / USBUART_TIMER_FREQ_HZ * 2 - 1);
timer_set_period(USBUSART_TIM,
USBUART_TIMER_FREQ_HZ / USBUART_RUN_FREQ_HZ - 1);
/* Setup update interrupt in NVIC */
nvic_set_priority(USBUSART_TIM_IRQ, IRQ_PRI_USBUSART_TIM);
@ -88,8 +91,9 @@ void usbuart_init(void)
}
/*
* Runs deferred processing for usb uart rx, draining RX FIFO by sending characters to host PC via CDCACM.
* Allowed to read from FIFO in pointer, but not write to it. Allowed to write to FIFO out pointer.
* Runs deferred processing for usb uart rx, draining RX FIFO by sending
* characters to host PC via CDCACM. Allowed to read from FIFO in pointer,
* but not write to it. Allowed to write to FIFO out pointer.
*/
static void usbuart_run(void)
{
@ -125,7 +129,9 @@ static void usbuart_run(void)
}
/* advance fifo out pointer by amount written */
buf_rx_out = (buf_rx_out + usbd_ep_write_packet(usbdev, CDCACM_UART_ENDPOINT, packet_buf, packet_size)) % FIFO_SIZE;
buf_rx_out += usbd_ep_write_packet(usbdev,
CDCACM_UART_ENDPOINT, packet_buf, packet_size);
buf_rx_out %= FIFO_SIZE;
}
}
@ -188,7 +194,8 @@ void usbuart_usb_in_cb(usbd_device *dev, uint8_t ep)
/*
* Read a character from the UART RX and stuff it in a software FIFO.
* Allowed to read from FIFO out pointer, but not write to it. Allowed to write to FIFO in pointer.
* Allowed to read from FIFO out pointer, but not write to it.
* Allowed to write to FIFO in pointer.
*/
void USBUSART_ISR(void)
{
@ -224,3 +231,4 @@ void USBUSART_TIM_ISR(void)
/* process FIFO */
usbuart_run();
}