void drvr_at86_reset() { hal_set_rst_low(); hal_set_slptr_low(); delay_us(TIME_RESET); hal_set_rst_high(); }
/** * @brief Initializes the transceiver * * This function is called to initialize the transceiver. * * @return MAC_SUCCESS if the transceiver state is changed to TRX_OFF and the * current device part number and version number are correct; * FAILURE otherwise */ static uint8_t trx_init(void) { uint8_t trx_status; uint8_t poll_counter = 0; hal_set_rst_high(); hal_set_slptr_low(); /* Wait typical time of timer TR1. */ delay_us(P_ON_TO_CLKM_AVAILABLE_TYP_US); /* Apply reset pulse */ hal_set_rst_low(); delay_us(RST_PULSE_WIDTH_US); hal_set_rst_high(); /* Verify that TRX_OFF can be written */ do { /* Wait not more than max. value of TR1. */ if (poll_counter == P_ON_TO_CLKM_ATTEMPTS) { return(-1/* FAILURE*/); } /* Wait a short time interval. */ delay_us(TRX_POLL_WAIT_TIME_US); poll_counter++; /* Check if AT86RF231 is connected; omit manufacturer id check */ } while ((hal_register_read(RG_VERSION_NUM) != AT86RF231_VERSION_NUM) || (hal_register_read(RG_PART_NUM) != AT86RF231_PART_NUM)); /* Verify that TRX_OFF can be written */ hal_register_write(RG_TRX_STATE, CMD_TRX_OFF); /* Verify that the trx has reached TRX_OFF. */ poll_counter = 0; do { /* Wait a short time interval. */ delay_us(TRX_POLL_WAIT_TIME_US); trx_status = (uint8_t)hal_subregister_read(SR_TRX_STATUS); /* Wait not more than max. value of TR2. */ if (poll_counter == SLEEP_TO_TRX_OFF_ATTEMPTS) { return(-1/* FAILURE*/); } poll_counter++; } while (trx_status != TRX_OFF); tal_trx_status = TRX_OFF; return(0); }
void hal_init(void) { int i; uint32_t volatile dummy; RCC->AHBENR |= RCC_AHBENR_GPIOAEN; RCC->APB2ENR |= (RCC_APB2ENR_SPI1EN); RCC->APB1ENR |= (RCC_APB1ENR_SPI2EN); /* Configure I/O */ #if (RF230_BUS == 1) /* SPI: MISO; MOSI and CLK */ gpio_conf_af(GPIOA, 5, GPIO_OUTPUT_TYPE_PPULL, GPIO_OSPEED_40MHZ, GPIO_RESISTORS_PULLDN); gpio_conf_af(GPIOA, 6, GPIO_OUTPUT_TYPE_PPULL, GPIO_OSPEED_40MHZ, GPIO_RESISTORS_PULLDN); gpio_conf_af(GPIOA, 7, GPIO_OUTPUT_TYPE_PPULL, GPIO_OSPEED_40MHZ, GPIO_RESISTORS_PULLDN); gpio_map_af(GPIOA, 5, GPIO_AF_SPI1); gpio_map_af(GPIOA, 6, GPIO_AF_SPI1); gpio_map_af(GPIOA, 7, GPIO_AF_SPI1); /* Manual CS */ gpio_conf_output(GPIOA, 4, GPIO_OUTPUT_TYPE_PPULL, GPIO_OSPEED_40MHZ); gpio_set_resistors(GPIOA, 4, GPIO_RESISTORS_PULLUP); /* Reset */ gpio_conf_output(GPIOA, 8, GPIO_OUTPUT_TYPE_PPULL, GPIO_OSPEED_40MHZ); /* Sleep */ gpio_conf_output(GPIOA, 10, GPIO_OUTPUT_TYPE_PPULL, GPIO_OSPEED_40MHZ); #if 0 /* printf("Initiating GPIO for radio\r\n"); */ /* CS */ GPIO_CONF_OUTPUT_PORT(A, 4, PUSH_PULL, 50); /* CLOCK */ GPIO_CONF_OUTPUT_PORT(A, 5, ALT_PUSH_PULL, 50); /* MISO */ GPIO_CONF_OUTPUT_PORT(A, 6, ALT_PUSH_PULL, 50); /* MOSI */ GPIO_CONF_OUTPUT_PORT(A, 7, ALT_PUSH_PULL, 50); /* Reset */ GPIO_CONF_OUTPUT_PORT(A, 8, PUSH_PULL, 50); /* Sleep */ GPIO_CONF_OUTPUT_PORT(A, 10, PUSH_PULL, 50); /* Set up interrupt pin from radio */ /* PA11 -> EXTI11, PA -> set EXTICR to 0 */ AFIO->EXTICR[2] &= 0x0FfF; /* Enable clock to peripheral IOPA */ RCC->APB2ENR |= (RCC_APB2ENR_AFIOEN | RCC_APB2ENR_IOPAEN); /* Configure IRQ pin as input */ GPIO_CONF_INPUT_PORT(A, 11, FLOATING); /* Unmask interrupt for interrupt line */ EXTI->IMR |= (1 << RADIO_IRQ_PIN); /* Unmask event for interrupt line */ EXTI->EMR |= (1 << RADIO_IRQ_PIN); /* Rising edge trigger */ EXTI->RTSR |= (1 << RADIO_IRQ_PIN); /* Falling edge trigger */ /* EXTI->FTSR |= (1 << RADIO_IRQ_PIN); */ dummy = EXTI->PR; NVIC->ISER[1] |= (1 << (EXTI15_10_IRQChannel & 0x1F)); #endif #else /* CS */ GPIO_CONF_OUTPUT_PORT(B, 12, PUSH_PULL, 50); /* CLOCK */ GPIO_CONF_OUTPUT_PORT(B, 13, ALT_PUSH_PULL, 50); /* MISO */ GPIO_CONF_OUTPUT_PORT(B, 14, ALT_PUSH_PULL, 50); /* MOSI */ GPIO_CONF_OUTPUT_PORT(B, 15, ALT_PUSH_PULL, 50); /* Reset */ GPIO_CONF_OUTPUT_PORT(B, 10, PUSH_PULL, 50); /* Sleep */ GPIO_CONF_OUTPUT_PORT(B, 11, PUSH_PULL, 50); /* Set up interrupt pin from radio */ /* PC11 -> EXTI11, PC -> set EXTICR bits to 2 */ AFIO->EXTICR[2] &= 0xFF0F; AFIO->EXTICR[2] |= 0x0020; /* Enable clock to peripheral IOPC */ RCC->APB2ENR |= (RCC_APB2ENR_AFIOEN | RCC_APB2ENR_IOPCEN); /* Configure IRQ pin as input */ GPIO_CONF_INPUT_PORT(C, 9, FLOATING); /* Unmask interrupt for line 9 */ EXTI->IMR |= (1 << RADIO_IRQ_PIN); /* Unmask event for line 9 */ EXTI->EMR |= (1 << RADIO_IRQ_PIN); /* Rising edge trigger */ EXTI->RTSR |= (1 << RADIO_IRQ_PIN); /* Falling edge trigger */ /* EXTI->FTSR |= (1 << RADIO_IRQ_PIN); */ dummy = EXTI->PR; NVIC->ISER[0] |= (1 << (EXTI9_5_IRQChannel & 0x1F)); #endif /* Assert reset */ hal_set_rst_low(); /* slptr */ hal_set_slptr_low(); /* Don't do like this...*/ for(i=0; i<100000; i++) ; /* Init SPI */ uspi_init(RF230_SPI_BUS, 000); /* No chip select */ spi_radio_cs(1); /* De-assert reset */ hal_set_rst_high(); }