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atmel-samd: Hook in DTR for more ports and make the serial TX more resiliant to long strings.

This commit is contained in:
Scott Shawcroft 2016-10-26 13:32:41 -07:00
parent 04284a9fe3
commit 34fa81eaf3
4 changed files with 32 additions and 8 deletions
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6
atmel-samd/boards/feather_m0_adalogger/conf_usb.h
View File

@ -54,8 +54,10 @@ extern void mp_cdc_disable(uint8_t port);
#define UDI_CDC_RX_NOTIFY(port) usb_rx_notify()
void usb_rx_notify(void);
#define UDI_CDC_SET_CODING_EXT(port,cfg)
#define UDI_CDC_SET_DTR_EXT(port,set)
#define UDI_CDC_SET_RTS_EXT(port,set)
#define UDI_CDC_SET_DTR_EXT(port,set) usb_dtr_notify(port, set)
void usb_dtr_notify(uint8_t port, bool set);
#define UDI_CDC_SET_RTS_EXT(port,set) usb_rts_notify(port, set)
void usb_rts_notify(uint8_t port, bool set);
/**
* USB CDC low level configuration

6
atmel-samd/boards/feather_m0_basic/conf_usb.h
View File

@ -54,8 +54,10 @@ extern void mp_cdc_disable(uint8_t port);
#define UDI_CDC_RX_NOTIFY(port) usb_rx_notify()
void usb_rx_notify(void);
#define UDI_CDC_SET_CODING_EXT(port,cfg)
#define UDI_CDC_SET_DTR_EXT(port,set)
#define UDI_CDC_SET_RTS_EXT(port,set)
#define UDI_CDC_SET_DTR_EXT(port,set) usb_dtr_notify(port, set)
void usb_dtr_notify(uint8_t port, bool set);
#define UDI_CDC_SET_RTS_EXT(port,set) usb_rts_notify(port, set)
void usb_rts_notify(uint8_t port, bool set);
/**
* USB CDC low level configuration

6
atmel-samd/boards/metro_m0_flash/conf_usb.h
View File

@ -54,8 +54,10 @@ extern void mp_cdc_disable(uint8_t port);
#define UDI_CDC_RX_NOTIFY(port) usb_rx_notify()
void usb_rx_notify(void);
#define UDI_CDC_SET_CODING_EXT(port,cfg)
#define UDI_CDC_SET_DTR_EXT(port,set)
#define UDI_CDC_SET_RTS_EXT(port,set)
#define UDI_CDC_SET_DTR_EXT(port,set) usb_dtr_notify(port, set)
void usb_dtr_notify(uint8_t port, bool set);
#define UDI_CDC_SET_RTS_EXT(port,set) usb_rts_notify(port, set)
void usb_rts_notify(uint8_t port, bool set);
/**
* USB CDC low level configuration

22
atmel-samd/mphalport.c
View File

@ -9,6 +9,7 @@
#include "asf/sam0/drivers/sercom/usart/usart.h"
#include "py/mphal.h"
#include "py/mpstate.h"
#include "py/smallint.h"
#include "mpconfigboard.h"
#include "mphalport.h"
@ -226,8 +227,25 @@ void mp_hal_stdout_tx_strn(const char *str, size_t len) {
// Always make sure there is enough room in the usb buffer for the outgoing
// string. If there isn't we risk getting caught in a loop within the usb
// code as it tries to send all the characters it can't buffer.
if (mp_cdc_enabled && udi_cdc_get_free_tx_buffer() >= len) {
udi_cdc_write_buf(str, len);
uint32_t start = 0;
uint32_t start_tick = mp_hal_ticks_ms();
uint32_t duration = 0;
if (mp_cdc_enabled) {
while (start < len && duration < 10) {
uint8_t buffer_space = udi_cdc_get_free_tx_buffer();
uint8_t transmit = min(len - start, buffer_space);
if (transmit > 0) {
if (udi_cdc_write_buf(str + start, transmit) > 0) {
// It didn't transmit successfully so give up.
break;
}
}
start += transmit;
if (mp_msc_enabled) {
udi_msc_process_trans();
}
duration = (mp_hal_ticks_ms() - start_tick) & MP_SMALL_INT_POSITIVE_MASK;
}
}
#endif
}