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Added Arduino-compatible kludge to the (ATMEL supplied) SAM3X USB stack we are now using so the Native port is also usable as a programming port on Arduino DUE and derived designs

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This commit is contained in:
ejtagle 2018-03-11 15:17:55 -03:00
parent 28f1276286
commit 703c8ac0ef
1 changed files with 17 additions and 3 deletions
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20
Marlin/src/HAL/HAL_DUE/usb/usb_task.c
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@ -48,6 +48,7 @@
#include "conf_usb.h"
#include "udc.h"
#include <Arduino.h>
#include <Reset.h>
static volatile bool main_b_msc_enable = false;
static volatile bool main_b_cdc_enable = false;
@ -80,11 +81,24 @@ void usb_task_cdc_rx_notify(const uint8_t port) { }
*
* \param cfg line configuration
*/
void usb_task_cdc_config(const uint8_t port, usb_cdc_line_coding_t *cfg) { }
static uint16_t dwDTERate = 0;
void usb_task_cdc_config(const uint8_t port, usb_cdc_line_coding_t *cfg) {
// Store last DTE rate
dwDTERate = cfg->dwDTERate;
}
void usb_task_cdc_set_dtr(const uint8_t port, const bool b_enable) {
if (b_enable) {
} else {
// Implement Arduino-Compatible kludge to enter programming mode from
// the native port:
// "Auto-reset into the bootloader is triggered when the port, already
// open at 1200 bps, is closed."
if (1200 == dwDTERate) {
// We check DTR state to determine if host port is open (bit 0 of lineState).
if (!b_enable)
initiateReset(250);
else
cancelReset();
}
}