/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f4xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f4xx.c file
*/
/* Initialize LEDs mounted on STM324xG-EVAL board */
STM_EVAL_LEDInit(LED1);
STM_EVAL_LEDInit(LED2);
/* Configure EXTI Line0 (connected to PA0 pin) in interrupt mode */
EXTILine0_Config();
/* Configure EXTI Line14 (connected to PB14 pin) in interrupt mode */
EXTILine14_Config();
/* Generate software interrupt: simulate a falling edge applied on EXTI0 line */
EXTI_GenerateSWInterrupt(EXTI_Line0);
while (1)
{
}
}
int main(void) {
GPIO_InitTypeDef GPIO_InitDef;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOG, ENABLE);
GPIO_InitDef.GPIO_Pin = GPIO_Pin_All;
GPIO_InitDef.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitDef.GPIO_OType = GPIO_OType_PP;
GPIO_InitDef.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitDef.GPIO_Speed = GPIO_Speed_2MHz;
//Initialize pins
GPIO_Init(GPIOG, &GPIO_InitDef);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_InitDef.GPIO_Pin = GPIO_Pin_All;
GPIO_InitDef.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitDef.GPIO_OType = GPIO_OType_PP;
GPIO_InitDef.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_InitDef.GPIO_Speed = GPIO_Speed_2MHz;
//Initialize pins
GPIO_Init(GPIOA, &GPIO_InitDef);
GPIO_SetBits(GPIOA, GPIO_Pin_All);
EXTILine11_Config();
EXTILine12_Config();
EXTILine13_Config();
EXTILine14_Config();
while (1) {
/*if (GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_0)) {
GPIO_SetBits(GPIOG, GPIO_Pin_13 | GPIO_Pin_14);
} else if (GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_1)) {
GPIO_SetBits(GPIOG, GPIO_Pin_13);
GPIO_ResetBits(GPIOG, GPIO_Pin_14);
} else if (GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_2)) {
GPIO_SetBits(GPIOG, GPIO_Pin_14);
GPIO_ResetBits(GPIOG, GPIO_Pin_13);
}*/
// else {
// GPIO_ResetBits(GPIOG, GPIO_Pin_13 | GPIO_Pin_14);
// }
}
}
void pyb_cc3000_spi_init(void) {
DEBUG_printf("pyb_cc3000_spi_init\n");
// enable SPI clock
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
// GPIO clocks should already be enabled
/*!< SPI pins configuration *************************************************/
/*!< Connect SPI pins to AF5 */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/*
inf.baudRate = 100000; // FIXME - just slow for debug
inf.spiMode = SPIF_SPI_MODE_1; // Mode 1 CPOL= 0 CPHA= 1
*/
/*!< SPI configuration */
SPI_InitTypeDef SPI_InitStructure;
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; // should be correct
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; // clock is low when idle
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; // data latched on second edge, which is falling edge for low-idle
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; // software control
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8; // clock freq = f_PCLK / this_prescale_value
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; // should be correct
SPI_InitStructure.SPI_CRCPolynomial = 7; // ?
SPI_Init(SPI2, &SPI_InitStructure);
/*!< Enable the SPI */
SPI_Cmd(SPI2, ENABLE);
/*
// WLAN CS, EN and WALN IRQ Configuration
jshSetPinStateIsManual(WLAN_CS_PIN, false);
jshPinOutput(WLAN_CS_PIN, 1); // de-assert CS
jshSetPinStateIsManual(WLAN_EN_PIN, false);
jshPinOutput(WLAN_EN_PIN, 0); // disable WLAN
jshSetPinStateIsManual(WLAN_IRQ_PIN, true);
jshPinSetState(WLAN_IRQ_PIN, JSHPINSTATE_GPIO_IN_PULLUP); // flip into read mode with pullup
*/
// configure wlan CS and EN pins
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_25MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOC, &GPIO_InitStructure);
pyb_cc3000_set_cs(1); // de-assert CS
pyb_cc3000_set_en(0); // disable wlan
// configure EXTI on A14
EXTILine14_Config();
// wait a little (ensure that WLAN takes effect)
sys_tick_delay_ms(500); // force a 500ms delay! FIXME
}