cardem: set more reasonable interrupt priorities

the ISO7816 UARTs have highest priority, while console has lowest.

remaining sources (USB, ADC, GPIO) are in between.

Change-Id: Ie6c97d61d8da3990b6e44144f36cb6d37d194307

firmware/apps/cardem/main.c

@@ -155,7 +155,7 @@ extern int main(void)
  WDT_Enable(WDT, WDT_MR_WDRSTEN | WDT_MR_WDDBGHLT | WDT_MR_WDIDLEHLT |
  (WDT_GetPeriod(2000) << 16) | WDT_GetPeriod(2000));
 
- PIO_InitializeInterrupts(0);
+ PIO_InitializeInterrupts(10);
 
  print_banner();
  board_main_top();

firmware/libboard/common/source/uart_console.c

@@ -100,6 +100,7 @@ extern void UART_Configure( uint32_t baudrate, uint32_t masterClock)
 
  /* Enable TX interrupts */
  pUart->UART_IER = UART_IER_TXRDY;
+ NVIC_SetPriority(CONSOLE_IRQ, 15); /* lowest priority */
  NVIC_EnableIRQ(CONSOLE_IRQ);
 
  /* Enable receiver and transmitter */

firmware/libcommon/source/mode_cardemu.c

@@ -470,6 +470,7 @@ static int card_vcc_adc_init(void)
  ADC->ADC_CHER |= ADC_CHER_CH6;
  ADC->ADC_IER |= ADC_IER_EOC6;
 #endif
+ NVIC_SetPriority(ADC_IRQn, 13);
  NVIC_EnableIRQ(ADC_IRQn);
  ADC->ADC_CR |= ADC_CR_START;
 
@@ -573,6 +574,8 @@ void mode_cardemu_init(void)
 
  TRACE_ENTRY();
 
+ NVIC_SetPriority(UDP_IRQn, 14);
+
 #ifdef PINS_CARDSIM
  PIO_Configure(pins_cardsim, PIO_LISTSIZE(pins_cardsim));
 #endif
@@ -586,6 +589,7 @@ void mode_cardemu_init(void)
 
  /* configure USART as ISO-7816 slave (e.g. card) */
  ISO7816_Init(&cardem_inst[0].usart_info, CLK_SLAVE);
+ NVIC_SetPriority(FIRST_USART_IRQ, 0);
  NVIC_EnableIRQ(FIRST_USART_IRQ);
  PIO_ConfigureIt(&pin_usim1_rst, usim1_rst_irqhandler);
  PIO_EnableIt(&pin_usim1_rst);
@@ -613,6 +617,7 @@ void mode_cardemu_init(void)
  PIO_Configure(pins_usim2, PIO_LISTSIZE(pins_usim2));
  ISO7816_Init(&cardem_inst[1].usart_info, CLK_SLAVE);
  /* TODO enable timeout */
+ NVIC_SetPriority(USART0_IRQn, 0);
  NVIC_EnableIRQ(USART0_IRQn);
  PIO_ConfigureIt(&pin_usim2_rst, usim2_rst_irqhandler);
  PIO_EnableIt(&pin_usim2_rst);