Hi, I have a firmware (non OS) which is configured as AP mode. Every second, this application sends a message to a device using UDP.
The problem is sometimes the firmware got stuck on _SlNonOsSemGet function.
I`m already calling _SlNonOsMainLoopTask() in every loop I think it is important.
Following you can find my configuration:
...
/* Configure CC3100 in a default state */
if (CC3100_SetupSTAMode() != 0)
PeriphInitFail(WIFI_STATION_MODE_ERR);
/*
* “CC3100_SetupAPMode()” function is
* called which configures the WiFi module as an access point, to
* allow the app to connect to it and start the provisioning process
*/
if (CC3100_SetupAPMode(ssid) != 0) {
PeriphInitFail(WIFI_AP_MODE_ERR);
}
CC3100_WaitClients();
...
CC3100_SetupSTAMode():
signed long CC3100_SetupSTAMode(void)
{
signed long ret_val = -1;
ret_val = InitializeAppVariables();
ASSERT_ON_ERROR(ret_val);
/*
* Following function configures the device to default state by cleaning
* the persistent settings stored in NVMEM (viz. connection profiles &
* policies, power policy etc)
*
* Applications may choose to skip this step if the developer is sure
* that the device is in its default state at start of application
*
* Note that all profiles and persistent settings that were done on the
* device will be lost
*/
ret_val = ConfigureSimpleLinkToDefaultState();
ASSERT_ON_ERROR(ret_val);
return SUCCESS;
}
CC3100_SetupAPMode(ssid):
signed long CC3100_SetupAPMode(char* ssid)
{
signed long ret_val = -1;
_i32 mode = ROLE_STA;
_u8 sec_type = 0;
/* Password calculation */
char network_password[16] = "";
/* Starts to blink power LED */
PowerLedBlink(ENABLE);
/*
* Assumption is that the device is configured in station mode already
* and it is in its default state
*/
mode = sl_Start(0, 0, 0);
if (mode == ROLE_AP) {
/*
* If the device is in AP mode, we need to wait for this event before doing
* anything
*/
while (!IS_IP_ACQUIRED(g_Status)) {
_SlNonOsMainLoopTask();
}
} else {
/* Configure CC3100 to start in AP mode */
ret_val = sl_WlanSetMode(ROLE_AP);
ASSERT_ON_ERROR(ret_val);
/* Configure the SSID of the CC3100 */
ret_val = sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_SSID,
pal_Strlen(ssid), (_u8*) ssid);
ASSERT_ON_ERROR(ret_val);
sec_type = SEC_TYPE_AP_MODE;
/* Configure the Security parameter of AP mode */
ret_val = sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_SECURITY_TYPE, 1,
(_u8 *) &sec_type);
ASSERT_ON_ERROR(ret_val);
ret_val = sl_WlanSet(SL_WLAN_CFG_AP_ID, WLAN_AP_OPT_PASSWORD,
pal_Strlen(network_password),
(_u8 *) network_password);
ASSERT_ON_ERROR(ret_val);
ret_val = sl_Stop(SL_STOP_TIMEOUT);
ASSERT_ON_ERROR(ret_val);
CLR_STATUS_BIT(g_Status, STATUS_BIT_IP_ACQUIRED);
mode = sl_Start(0, 0, 0);
if (ROLE_AP == mode) {
/* If the device is in AP mode, we need to wait for this event
* before doing anything */
while (!IS_IP_ACQUIRED(g_Status)) {
_SlNonOsMainLoopTask();
}
} else {
return -(ECONNABORTED);
}
}
return ret_val;
}
In the past, I could see it happening when I had a code where a interruption was sending some data and at the same time was reading a socket. However, I'm not enabling that interruption anymore to avoid that problem.
From the SPI point of view, I`m using a STM32F4 microcontroller family, with the CC3100 is connected to the SPI1 and uses a preescale of 8 (45MHz/8 = 5.625MHz). Following you can find the code to configure the SPI pins.
Fd_t CC3100_SpiOpen(char *if_name, unsigned long flags)
{
/* Set variables used */
GPIO_InitTypeDef GPIO_InitStructure;
SPI_InitTypeDef SPI_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable clock for GPIOA, GPIOB, GPIOC */
RCC_AHB1PeriphClockCmd(CC3100_CS_PERIPH, ENABLE);
RCC_AHB1PeriphClockCmd(CC3100_RST_PERIPH, ENABLE);
/* Configure nHIB(PA3) pin as output floating */
GPIO_InitStructure.GPIO_Pin = CC3100_NHIB_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(CC3100_NHIB_PORT, &GPIO_InitStructure);
GPIO_ResetBits(CC3100_NHIB_PORT, CC3100_NHIB_PIN); /* Assert nHIB */
/* Configure CS(PA4) pin as output floating */
GPIO_InitStructure.GPIO_Pin = CC3100_CS_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(CC3100_CS_PORT, &GPIO_InitStructure);
GPIO_SetBits(CC3100_CS_PORT, CC3100_CS_PIN); /* Deassert CS */
/* Configure RST(PC4) pin as output floating */
GPIO_InitStructure.GPIO_Pin = CC3100_RST_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(CC3100_RST_PORT, &GPIO_InitStructure);
/* Trogle reset */
GPIO_ResetBits(CC3100_RST_PORT, CC3100_RST_PIN); /* Assert RST */
Delay_ms(250);
GPIO_SetBits(CC3100_RST_PORT, CC3100_RST_PIN); /* Deassert RST */
Delay_ms(300);
/* Configuring pins used by SPI1 PA5(SCK), PA6(MISO), PA7(MOSI) */
GPIO_InitStructure.GPIO_Pin = CC3100_SPI_CLK |
CC3100_SPI_MISO |
CC3100_SPI_MOSI;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(CC3100_SPI_PORT, &GPIO_InitStructure);
/* Connect SPI1 pins to SPI alternate function */
GPIO_PinAFConfig(CC3100_SPI_PORT, CC3100_SPI_CLK_PINSRC, CC3100_SPI_AF);
GPIO_PinAFConfig(CC3100_SPI_PORT, CC3100_SPI_MISO_PINSRC, CC3100_SPI_AF);
GPIO_PinAFConfig(CC3100_SPI_PORT, CC3100_SPI_MOSI_PINSRC, CC3100_SPI_AF);
/* Enable SPI1 clock */
RCC_APB2PeriphClockCmd(CC3100_SPI_PERIPH, ENABLE);
SPI_DeInit(CC3100_SPI);
/* Configure SPI1 in Mode 0 = CLK is low when idle, data is sampled at the first edge */
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_8;
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft | SPI_NSSInternalSoft_Set;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_Init(CC3100_SPI, &SPI_InitStructure);
SPI_Cmd(CC3100_SPI, ENABLE);
/* Configure host IRQ line */
/* Enable clock for SYSCFG */
RCC_APB2PeriphClockCmd(CC3100_IRQ_PERIPH_CFG, ENABLE);
/* Configure PC5 pin as input floating */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_Pin = CC3100_IRQ_PIN;
GPIO_Init(CC3100_IRQ_PORT, &GPIO_InitStructure);
/* Tell system that you will use PC5 for EXTI_Line5 */
SYSCFG_EXTILineConfig(CC3100_IRQ_EXTI_SRC, CC3100_IRQ_PINSRC);
/* Configure EXTI Line5 */
EXTI_InitStructure.EXTI_Line = CC3100_IRQ_LINE; /* PC5 is connected to EXTI_Line5 */
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; /* Interrupt mode */
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; /* Triggers on rising and falling edge */
EXTI_InitStructure.EXTI_LineCmd = ENABLE; /* Enable interrupt */
/* Add to EXTI */
EXTI_Init(&EXTI_InitStructure);
/* Add IRQ vector to NVIC */
/* PC5 is connected to EXTI_Line5, which has EXTI9_5_IRQn vector */
NVIC_InitStructure.NVIC_IRQChannel = CC3100_IRQ_CHANNEL;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01; /* Set priority */
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01; /* Set sub priority */
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; /* Enable interrupt */
/* Add to NVIC */
NVIC_Init(&NVIC_InitStructure);
EXTI_ClearITPendingBit(CC3100_IRQ_LINE);
Delay_ms(50);
return NONOS_RET_OK;
}
