feat: interrupt request

include/derivative.h

@@ -12,7 +12,6 @@
 #define CPU_INT_FAST_CLK_HZ 4000000u  // Value of the fast internal oscillator clock frequency in Hz
 
 #define UART_MSG UART1
-#define UART_WIFI UART2
 
 #define PI 3.1415926
 #define BIT(x) (1UL << (x))

include/uart.h

@@ -38,8 +38,11 @@ static inline void uart_init(UART_Type *UART, unsigned long baud) {
     UART->BDL = sbr & UART_BDL_SBR_MASK;
     // Enable receiver and transmitter
     UART->C2 |= UART_C2_TE_MASK     // Transmitter enable
-                | UART_C2_RE_MASK    // Receiver enable
+                | UART_C2_RE_MASK;  // Receiver enable
-                | UART_C2_RIE_MASK;  // Receiver interrupt enable
+}
+
+static inline void uart_rie_enable(UART_Type *UART) {
+    UART->C2 |= UART_C2_RIE_MASK;  // Receiver interrupt enable
 }
 
 static inline int uart_read_ready(UART_Type *UART) {

main.c

@@ -1,4 +1,3 @@
-#include "ESP8266.h"
 #include "derivative.h"
 #include "systick.h"
 #include "uart.h"
@@ -9,6 +8,7 @@ int main(void) {
     // Initialize
     systick_init(CORCLK / 1000);  // Period of systick timer : 1ms
     uart_init(UART_MSG, 9600);    // Initialize UART1 with PC
+    uart_rie_enable(UART_MSG);    // Enable UART1 receive interrupt
 
     uart_printf(UART_MSG, "System Clock: %lu\r\n", CORCLK);
     uart_printf(UART_MSG, "Bus Clock: %lu\r\n", BUSCLK);

src/startup.c

@@ -172,9 +172,6 @@ __attribute__((naked, noreturn)) void _reset(void) {
 
 // Interrupt service routine (ISR)
 extern void _estack(void);  // Defined in link.ld
-extern void SysTick_Handler(void);  // Defined in main.c
-
-void Default_Handler() { __asm("bkpt"); }
 
 /*
     Set tab (the vector table) in the section ".vectors"
@@ -183,11 +180,50 @@ void Default_Handler() { __asm("bkpt"); }
     the first one is the initial stack pointer
     the second one is the initial program counter
 */
+
+void Default_Handler() { __asm("bkpt"); }
+void NMI_Handler() __attribute__((weak, alias("Default_Handler")));
+void HardFault_Handler() __attribute__((weak, alias("Default_Handler")));
+void SVC_Handler() __attribute__((weak, alias("Default_Handler")));
+void PendSV_Handler() __attribute__((weak, alias("Default_Handler")));
+void SysTick_Handler() __attribute__((weak, alias("Default_Handler")));
+
+void DMA0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void DMA1_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void DMA2_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void DMA3_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void MCM_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void FTFL_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void PMC_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void LLWU_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void I2C0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void I2C1_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void SPI0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void SPI1_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void UART0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void UART1_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void UART2_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void ADC0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void CMP0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void TPM0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void TPM1_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void TPM2_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void RTC_Alarm_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void RTC_Seconds_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void PIT_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void USBOTG_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void DAC0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void TSI0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void MCG_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void LPTMR0_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void PORTA_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+void PORTD_IRQHandler() __attribute__((weak, alias("Default_Handler")));
+
 __attribute__((section(".vectors"))) void (*tab[16 + 32])(void) = {
     _estack,                 // Initial stack pointer
     _reset,                  // Reset handler
-    Default_Handler,  // NMI handler
+    NMI_Handler,             // NMI handler
-    Default_Handler,  // Hard Fault handler
+    HardFault_Handler,       // Hard Fault handler
     0,                       // Reserved
     0,                       // Reserved
     0,                       // Reserved
@@ -195,11 +231,43 @@ __attribute__((section(".vectors"))) void (*tab[16 + 32])(void) = {
     0,                       // Reserved
     0,                       // Reserved
     0,                       // Reserved
-    Default_Handler,  // SVC handler
+    SVC_Handler,             // SVC handler
     0,                       // Reserved
     0,                       // Reserved
-    Default_Handler,  // PendSV handler
+    PendSV_Handler,          // PendSV handler
-    SysTick_Handler   // SysTick handler
+    SysTick_Handler,         // SysTick handler
+    DMA0_IRQHandler,         // DMA channel 0 transfer complete and error
+    DMA1_IRQHandler,         // DMA channel 1 transfer complete and error
+    DMA2_IRQHandler,         // DMA channel 2 transfer complete and error
+    DMA3_IRQHandler,         // DMA channel 3 transfer complete and error
+    MCM_IRQHandler,          // Normal interrupt
+    FTFL_IRQHandler,         // command complete and read collision
+    PMC_IRQHandler,          // Low-voltage detect, low-voltage warning
+    LLWU_IRQHandler,         // Low Leakage Wakeup
+    I2C0_IRQHandler,         // I2C0 interrupt
+    I2C1_IRQHandler,         // I2C1 interrupt
+    SPI0_IRQHandler,         // SPI0 interrupt
+    SPI1_IRQHandler,         // SPI1 interrupt
+    UART0_IRQHandler,        // UART0 status and error
+    UART1_IRQHandler,        // UART1 status and error
+    UART2_IRQHandler,        // UART2 status and error
+    ADC0_IRQHandler,         // ADC0 interrupt
+    CMP0_IRQHandler,         // CMP0 interrupt
+    TPM0_IRQHandler,         // TPM0 fault, overflow and channels interrupt
+    TPM1_IRQHandler,         // TPM1 fault, overflow and channels interrupt
+    TPM2_IRQHandler,         // TPM2 fault, overflow and channels interrupt
+    RTC_Alarm_IRQHandler,    // RTC alarm interrupt
+    RTC_Seconds_IRQHandler,  // RTC seconds interrupt
+    PIT_IRQHandler,          // PIT timer all channels interrupt
+    Default_Handler,         // Reserved
+    USBOTG_IRQHandler,       // USB OTG interrupt
+    DAC0_IRQHandler,         // DAC0 interrupt
+    TSI0_IRQHandler,         // TSI0 interrupt
+    MCG_IRQHandler,          // MCG interrupt
+    LPTMR0_IRQHandler,       // LPTimer interrupt
+    Default_Handler,         // Reserved
+    PORTA_IRQHandler,        // Port A interrupt
+    PORTD_IRQHandler,        // Port D interrupt
 };
 
 __attribute__((section(".cfmconfig"))) uint32_t(cfm[4]) = {0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFE};