experimental pin-cir

boards/STBEE_MINI/board.c

@@ -20,6 +20,36 @@ hwinit1 (void)
   while (palReadPad (IOPORT2, GPIOB_BUTTON) != 0)
     ;				/* Wait for JTAG debugger connection */
   palWritePort(IOPORT2, 0xffff); /* All set */
+
+  /* EXTI0 <= PB0 */
+  AFIO->EXTICR[0] = AFIO_EXTICR1_EXTI0_PB;
+  EXTI->IMR = 0;
+#if 0
+  EXTI->RTSR = EXTI_RTSR_TR0;
+#else
+  EXTI->FTSR = EXTI_FTSR_TR0;
+#endif
+  NVICEnableVector(EXTI0_IRQn,
+		   CORTEX_PRIORITY_MASK(CORTEX_MINIMUM_PRIORITY));
+
+  /* TIM3 */
+  RCC->APB1ENR |= RCC_APB1ENR_TIM3EN;
+  RCC->APB1RSTR = RCC_APB1RSTR_TIM3RST;
+  RCC->APB1RSTR = 0;
+  NVICEnableVector(TIM3_IRQn,
+		   CORTEX_PRIORITY_MASK(CORTEX_MINIMUM_PRIORITY));
+  TIM3->CR1 = TIM_CR1_URS | TIM_CR1_ARPE; /* Don't enable TIM3 for now */
+  TIM3->CR2 = TIM_CR2_TI1S;
+  TIM3->SMCR = TIM_SMCR_TS_0 | TIM_SMCR_TS_2 | TIM_SMCR_SMS_2;
+  TIM3->DIER = 0;		/* Disable interrupt for now */
+  TIM3->CCMR1 = TIM_CCMR1_CC1S_0 | TIM_CCMR1_IC1F_0 | TIM_CCMR1_IC1F_3
+    | TIM_CCMR1_CC2S_1 | TIM_CCMR1_IC2F_0 | TIM_CCMR1_IC2F_3;
+  TIM3->CCMR2 = 0;
+  TIM3->CCER =  TIM_CCER_CC1E | TIM_CCER_CC2E | TIM_CCER_CC2P;
+  TIM3->PSC = 72 - 1;		/* 1 MHz */
+  TIM3->ARR = 18000;		/* 18 ms */
+  /* Generate UEV to upload PSC and ARR */
+  TIM3->EGR = TIM_EGR_UG;	
 #endif
   /*
    * Disable JTAG and SWD, done after hwinit1_common as HAL resets AFIO
@@ -46,3 +76,43 @@ set_led (int value)
   else
     palSetPad (IOPORT1, GPIOA_LED1);
 }
+
+#if defined(PINPAD_SUPPORT)
+void
+cir_ext_disable (void)
+{
+  EXTI->PR = EXTI_PR_PR0;
+  EXTI->IMR &= ~EXTI_IMR_MR0;
+}
+
+void
+cir_ext_enable (void)
+{
+  EXTI->IMR |= EXTI_IMR_MR0;
+}
+
+extern void cir_ext_interrupt (void);
+extern void cir_timer_interrupt (void);
+
+CH_IRQ_HANDLER (EXTI0_IRQHandler)
+{
+  CH_IRQ_PROLOGUE ();
+  chSysLockFromIsr ();
+
+  cir_ext_interrupt ();
+
+  chSysUnlockFromIsr ();
+  CH_IRQ_EPILOGUE ();
+}
+
+CH_IRQ_HANDLER (TIM3_IRQHandler)
+{
+  CH_IRQ_PROLOGUE();
+  chSysLockFromIsr();
+
+  cir_timer_interrupt ();
+
+  chSysUnlockFromIsr();
+  CH_IRQ_EPILOGUE();
+}
+#endif

boards/STBEE_MINI/board.h

@@ -99,6 +99,7 @@
 
 /* Port B setup. */
 #if defined(PINPAD_SUPPORT)
+#define GPIOB_CIR		0
 #define GPIOB_BUTTON            2
 #define GPIOB_ROT_A             3
 #define GPIOB_ROT_B             4
@@ -143,4 +144,9 @@
 #define VAL_GPIODCRH            0x88888888      /* PD15...PD8 */
 #define VAL_GPIODODR            0xFFFFFFFF
 
+#if defined(PINPAD_SUPPORT)
+extern void cir_ext_disable (void);
+extern void cir_ext_enable (void);
+#endif
+
 #endif /* _BOARD_H_ */