void gpio0_callback(void)
{
NVIC_DisableIRQ(GPIO0_IRQn); // Disable this interrupt
if(GPIO_GetPinStatus(UART1_CTS_PORT, UART1_CTS_PIN)==FALSE)
{
app_override_ble_xon();
//Set interrupt to detect rising edge of CTS
GPIO_EnableIRQ(UART1_CTS_PORT, UART1_CTS_PIN, GPIO0_IRQn, 0, 1, 0);
}
else if(GPIO_GetPinStatus(UART1_CTS_PORT, UART1_CTS_PIN)==TRUE)
{
app_override_ble_xoff();
//Set interrupt to detect falling edge of CTS
GPIO_EnableIRQ(UART1_CTS_PORT, UART1_CTS_PIN, GPIO0_IRQn, 1, 0, 0);
}
NVIC_ClearPendingIRQ(GPIO0_IRQn);
NVIC_EnableIRQ(GPIO0_IRQn); // Enable this interrupt
}
/**
****************************************************************************************
* @brief Enable pad's and peripheral clocks assuming that peripherals' power domain is down. The Uart and SPi clocks are set.
*
* @return void
****************************************************************************************
*/
void periph_init(void)
{
// Power up peripherals' power domain
SetBits16(PMU_CTRL_REG, PERIPH_SLEEP, 0);
while (!(GetWord16(SYS_STAT_REG) & PER_IS_UP)) ;
//rom patch
patch_func();
//Init pads
set_pad_functions();
SetBits16(CLK_PER_REG, UART1_ENABLE, 1); // enable clock - always @16MHz
// baudr=9-> 115k2
// mode=3-> no parity, 1 stop bit 8 data length
uart_sps_init(UART_SPS_BAUDRATE, 3); //exact baud rate defined in uart.h
// Enable the pads
SetBits16(SYS_CTRL_REG, PAD_LATCH_EN, 1);
#if (EXT_SLEEP_ENABLED)
app_scheduler_reinit();
#endif //EXT_SLEEP_ENABLED
#if ((UART_HW_FLOW_ENABLED) && !defined(GPIO_DRV_IRQ_HANDLING_DISABLED))
GPIO_RegisterCallback(GPIO0_IRQn, gpio0_callback);
if(GPIO_GetPinStatus(UART1_CTS_PORT,UART1_CTS_PIN)==FALSE)
{
GPIO_EnableIRQ(UART1_CTS_PORT, UART1_CTS_PIN, GPIO0_IRQn, 0, 1, 0);
}
else if(GPIO_GetPinStatus(UART1_CTS_PORT,UART1_CTS_PIN)==TRUE)
{
GPIO_EnableIRQ(UART1_CTS_PORT, UART1_CTS_PIN, GPIO0_IRQn, 1, 0, 0);
}
#endif //((UART_HW_FLOW_ENABLED) && !defined(GPIO_DRV_IRQ_HANDLING_DISABLED))
}
/**
* @brief Enable the IRQ of the specified GPIO
* @param[in] port GPIO port
* @param[in] pin GPIO pin number
* @param[in] param Pointer to GPIO_IrqParam structure
* @return None
*/
void HAL_GPIO_EnableIRQ(GPIO_Port port, GPIO_Pin pin, const GPIO_IrqParam *param)
{
uint32_t regIdx;
uint32_t bitShift;
GPIO_IRQ_T *gpiox;
GPIO_Private *gpioPriv;
IRQn_Type IRQn;
unsigned long flags;
flags = HAL_EnterCriticalSection();
if (port == GPIO_PORT_A) {
gpioPriv = gGPIOAPrivate;
IRQn = GPIOA_IRQn;
} else if (port == GPIO_PORT_B) {
gpioPriv = gGPIOBPrivate;
IRQn = GPIOB_IRQn;
} else {
HAL_ERR("Invalid port %d for IRQ\n", port);
return;
}
gpiox = GPIO_GetIRQInstance(port);
/* set callback */
gpioPriv[pin].callback = param->callback;
gpioPriv[pin].arg = param->arg;
/* set IRQ trigger mode */
GPIO_GET_REG_IDX_SHIFT(regIdx, bitShift, pin, GPIO_IRQ_EVT_BITS);
HAL_MODIFY_REG(gpiox->IRQ_MODE[regIdx],
GPIO_IRQ_EVT_VMASK << bitShift,
(param->event & GPIO_IRQ_EVT_VMASK) << bitShift);
if (GPIO_IsPendingIRQ(gpiox, pin)) {
GPIO_ClearPendingIRQ(gpiox, pin);
}
GPIO_EnableIRQ(gpiox, pin);
HAL_NVIC_SetPriority(IRQn, NVIC_PERIPHERAL_PRIORITY_DEFAULT);
HAL_NVIC_EnableIRQ(IRQn);
HAL_ExitCriticalSection(flags);
}
