From c81560826e92e3794458207c397980d1dcd4794d Mon Sep 17 00:00:00 2001
From: moonglow <fxdteam@gmail.com>
Date: Fri, 11 Jun 2021 13:12:13 +0300
Subject: [PATCH 1/3] *increase TXFIFO to 256 slots *abort all pending
 mailboxes for start/stop events

---
 Src/pcanpro_can.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/Src/pcanpro_can.c b/Src/pcanpro_can.c
index ee59195..2681eb4 100644
--- a/Src/pcanpro_can.c
+++ b/Src/pcanpro_can.c
@@ -15,7 +15,7 @@ static CAN_HandleTypeDef hcan[CAN_BUS_TOTAL] =
   [CAN_BUS_2].Instance = CAN2
 };
 
-#define CAN_TX_FIFO_SIZE (64)
+#define CAN_TX_FIFO_SIZE (256)
 static struct t_can_dev
 {
   void *dev;
@@ -316,10 +316,10 @@ int pcan_can_init_ex( int bus, uint32_t bitrate )
   p_can->Init.TimeTriggeredMode = DISABLE;
   p_can->Init.AutoBusOff = ENABLE;
   p_can->Init.AutoWakeUp = ENABLE;
-  /* do resend packets ! */
+
   p_can->Init.AutoRetransmission = DISABLE;
   p_can->Init.ReceiveFifoLocked = DISABLE;
-  p_can->Init.TransmitFifoPriority = DISABLE;
+  p_can->Init.TransmitFifoPriority = ENABLE;
   
   /* APB1 bus ref clock = 24MHz, best sp is 87.5% */
   _get_precalculated_bitrate( bitrate, &brp, &tseg1, &tseg2, &sjw );
@@ -381,9 +381,11 @@ void pcan_can_set_bus_active( int bus, uint16_t mode )
   if( mode )
   {
     HAL_CAN_Start( p_can );
+    HAL_CAN_AbortTxRequest( p_can, CAN_TX_MAILBOX0 | CAN_TX_MAILBOX1 | CAN_TX_MAILBOX2 );
   }
   else
   {
+    HAL_CAN_AbortTxRequest( p_can, CAN_TX_MAILBOX0 | CAN_TX_MAILBOX1 | CAN_TX_MAILBOX2 );
     HAL_CAN_Stop( p_can );
   }
 }

From d8aeedceb51f31b0823ff90b1c089794051d3602 Mon Sep 17 00:00:00 2001
From: Tomasz <tomaszduda23@gmail.com>
Date: Wed, 30 Jun 2021 16:13:59 +0200
Subject: [PATCH 2/3] Make status led blink when device is alive. When it
 crashes the LED freezes.

---
 Src/main.c                | 1 +
 Src/pcanpro_fd_protocol.c | 2 +-
 Src/pcanpro_protocol.c    | 1 +
 Src/pcanpro_timestamp.c   | 4 ++++
 4 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Src/main.c b/Src/main.c
index 1537bcb..cf62e6d 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -76,6 +76,7 @@ int main(void)
   pcan_timestamp_init();
   
   pcan_led_init();
+  pcan_led_set_mode( LED_STAT, LED_MODE_BLINK_FAST, 0xFFFFFFFF );
   pcan_protocol_init();
   pcan_usb_device_init();
   
diff --git a/Src/pcanpro_fd_protocol.c b/Src/pcanpro_fd_protocol.c
index a4c911b..fbf8d72 100644
--- a/Src/pcanpro_fd_protocol.c
+++ b/Src/pcanpro_fd_protocol.c
@@ -203,7 +203,7 @@ void pcan_ep0_receive( void )
     pcan_flush_ep( PCAN_USB_EP_MSGIN_CH1 );
     pcan_flush_ep( PCAN_USB_EP_CMDIN );
     pcan_device.can_drv_loaded = drv_load_packet[1];
-    pcan_led_set_mode( LED_STAT, LED_MODE_ON, 0 );
+    pcan_led_set_mode( LED_STAT, LED_MODE_BLINK_SLOW, 0xFFFFFFFF );
   }
   else
     pcan_device.lin_drv_loaded = drv_load_packet[1];
diff --git a/Src/pcanpro_protocol.c b/Src/pcanpro_protocol.c
index ef83566..3c2cf78 100644
--- a/Src/pcanpro_protocol.c
+++ b/Src/pcanpro_protocol.c
@@ -243,6 +243,7 @@ void pcan_ep0_receive( void )
   {
     pcan_flush_ep( PCAN_USB_EP_MSGIN_CH1 );
     pcan_flush_ep( PCAN_USB_EP_CMDIN );
+    pcan_led_set_mode( LED_STAT, LED_MODE_BLINK_SLOW, 0xFFFFFFFF );
   }
   else
   {
diff --git a/Src/pcanpro_timestamp.c b/Src/pcanpro_timestamp.c
index 0a5baa7..9f09212 100644
--- a/Src/pcanpro_timestamp.c
+++ b/Src/pcanpro_timestamp.c
@@ -33,6 +33,10 @@ void pcan_timestamp_init( void )
       assert( 0 );
     break;
   }
+
+  //HAL_GetTick must not return 0 to use LED events in early stage.
+  //Let's increment the value here by one.
+  HAL_IncTick();
 }
 
 uint32_t pcan_timestamp_millis( void )

From ddae76df328bcc315a4a3f9e34f1e7b159e23738 Mon Sep 17 00:00:00 2001
From: Roman Ilichev <fxdteam@gmail.com>
Date: Mon, 25 Oct 2021 18:32:58 +0300
Subject: [PATCH 3/3] *use hardware only TX/RX loop flag ( fix unneeded TX echo
 )

---
 Src/pcanpro_fd_protocol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Src/pcanpro_fd_protocol.c b/Src/pcanpro_fd_protocol.c
index fbf8d72..db333a5 100644
--- a/Src/pcanpro_fd_protocol.c
+++ b/Src/pcanpro_fd_protocol.c
@@ -335,7 +335,7 @@ int pcan_protocol_tx_frame( struct ucan_tx_msg *pmsg )
     msg.flags |= MSG_FLAG_RTR;
   if( pmsg->flags & UCAN_MSG_EXT_ID )
     msg.flags |= MSG_FLAG_EXT;
-  if( pmsg->flags & (UCAN_MSG_API_SRR|UCAN_MSG_HW_SRR) )
+  if( pmsg->flags & (/*UCAN_MSG_API_SRR|*/UCAN_MSG_HW_SRR) )
   {
     msg.flags |= MSG_FLAG_ECHO;
     msg.dummy = pmsg->client;