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lpc176x: Add mechanism for entering the bootloader from a USB signal 

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-01-13 12:25:58 -05:00
parent 093512b971
commit 078a03dc21
1 changed files with 9 additions and 0 deletions
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9
src/lpc176x/usbserial.c
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@ -6,6 +6,8 @@
#include <string.h> // memcpy #include <string.h> // memcpy
#include "LPC17xx.h" // LPC_SC #include "LPC17xx.h" // LPC_SC
#include "autoconf.h" // CONFIG_SMOOTHIEWARE_BOOTLOADER
#include "board/irq.h" // irq_disable
#include "byteorder.h" // cpu_to_le32 #include "byteorder.h" // cpu_to_le32
#include "command.h" // output #include "command.h" // output
#include "generic/usb_cdc.h" // usb_notify_ep0 #include "generic/usb_cdc.h" // usb_notify_ep0
@ -244,6 +246,13 @@ usb_set_configure(void)
void void
usb_request_bootloader(void) usb_request_bootloader(void)
{ {
if (!CONFIG_SMOOTHIEWARE_BOOTLOADER)
return;
// The "LPC17xx-DFU-Bootloader" will enter the bootloader if the
// watchdog timeout flag is set.
irq_disable();
LPC_WDT->WDMOD = 0x07;
NVIC_SystemReset();
} }
void void