Increase priority of I2C

microbit-foundation · Oct 7, 2020 · d94d02f · d94d02f
1 parent f1bb93e
commit d94d02f
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diff --git a/source/board/microbitv2/i2c.c b/source/board/microbitv2/i2c.c
@@ -136,6 +136,8 @@ int32_t i2c_initialize(void) {
     slaveConfig.enableWakeUp   = true;
 
     I2C_SlaveInit(I2C_SLAVE_BASEADDR, &slaveConfig, I2C_SLAVE_CLK_FREQ);
+
+    NVIC_SetPriority(I2C1_IRQn, 0x00);  /* set highest priority */
 
     i2c_start_transfer();
 

diff --git a/source/board/microbitv2/power.c b/source/board/microbitv2/power.c
@@ -94,7 +94,9 @@ void power_init(void)
     /* Enable rising edge interrupt on WAKE_ON_EDGE pin (VBUS falling edge) to detect USB detach */
     PORT_SetPinInterruptConfig(PIN_WAKE_ON_EDGE_PORT, PIN_WAKE_ON_EDGE_BIT, kPORT_InterruptRisingEdge);
 
+    NVIC_SetPriority(LLWU_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL);
     NVIC_EnableIRQ(LLWU_IRQn);
+    NVIC_SetPriority(PORTC_PORTD_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL);
     NVIC_EnableIRQ(PORTC_PORTD_IRQn);
 }
 

diff --git a/source/hic_hal/freescale/kl27z/uart.c b/source/hic_hal/freescale/kl27z/uart.c
@@ -92,6 +92,8 @@ int32_t uart_initialize(void)
     UART->CTRL |= LPUART_CTRL_RE_MASK | LPUART_CTRL_TE_MASK;
     // Enable receiver interrupt and RX Overrun interrupt
     UART->CTRL |= LPUART_CTRL_RIE_MASK | LPUART_CTRL_ORIE_MASK;
+
+    NVIC_SetPriority(UART_RX_TX_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL);
     NVIC_ClearPendingIRQ(UART_RX_TX_IRQn);
     NVIC_EnableIRQ(UART_RX_TX_IRQn);
     return 1;

diff --git a/source/hic_hal/freescale/usbd_kinetis.c b/source/hic_hal/freescale/usbd_kinetis.c
@@ -227,6 +227,7 @@ void USBD_Reset(void)
     USB0->ERREN   =  0xFF;                /* enable error interrupt sources     */
     USB0->ADDR    =  0x00;                /* set default address                */
 
+    NVIC_SetPriority(USB0_IRQn, 0x01);    /* set second highest priority        */
     NVIC_EnableIRQ(USB0_IRQn);
 }