9 years, 12 months ago.

Getting Started with Sparkfun cc3000 + LPC1768

I'm using the simple Hello World Example in the cookbook however I am using a different breakout board that that of Adafruit. I am using the sparkfun breakout board with instructions here: https://learn.sparkfun.com/tutorials/cc3000-hookup-guide for the ariduno. However I am trying to hook it up with the mbed.

Currently I have pins of the sparkfun cc3000 breakout set up like this :

GND -> external USB GND

VCC -> external USB supply (5v 1A)

MOSI - > mbed p5

MISO -> mbed p6

SCK -> mbed p7

CS -> mbed p10

INT -> mbed p9

EN -> mbed p8

I am more confused about which pins should go where for CS, INT, and EN because they do not correspond to the adafruit IRQ and VBEN. If anyone has insight on this that would be great.

Also the code that I am trying to get this to work is the original hello work program except I have defined MY_BOARD as MBED_BOARD_EXAMPLE:

#ifndef MAIN_H
#define MAIN_H

#define WIGO               1
#define WIFI_DIPCORTEX     2
#define MBED_BOARD_EXAMPLE 3
#define UNDEFINED          4

#define MY_BOARD MBED_BOARD_EXAMPLE

void init();

#endif

I've left init.cpp alone however reading some other forums it seems that it should be changed? I am not sure about what to do if that is the case:

#include "main.h"
#include "mbed.h"

#if (MY_BOARD == WIGO)

#include "NVIC_set_all_priorities.h"

/**
 *  \brief Wi-Go initialization
 *  \param none
 *  \return none
 */
void init() {
    DigitalOut PWR_EN1(PTB2);
    DigitalOut PWR_EN2(PTB3);

    // Wi-Go set current to 500mA since we're turning on the Wi-Fi
    PWR_EN1 = 0;
    PWR_EN2 = 1;

    NVIC_set_all_irq_priorities(3);
    NVIC_SetPriority(SPI0_IRQn, 0x0);     // Wi-Fi SPI interrupt must be higher priority than SysTick
    NVIC_SetPriority(PORTA_IRQn, 0x1);
    NVIC_SetPriority(SysTick_IRQn, 0x2);  // SysTick set to lower priority than Wi-Fi SPI bus interrupt
    PORTA->PCR[16] |=PORT_PCR_ISF_MASK;
    PORTA->ISFR |= (1 << 16);
}

#elif (MY_BOARD == WIFI_DIPCORTEX)

/**
 *  \brief Wifi DipCortex initialization
 *  \param none
 *  \return none
 */
void init() {
    NVIC_SetPriority(SSP1_IRQn, 0x0);
    NVIC_SetPriority(PIN_INT0_IRQn, 0x1);

    // SysTick set to lower priority than Wi-Fi SPI bus interrupt
    NVIC_SetPriority(SysTick_IRQn, 0x2);
}

#else

/**
 *  \brief Place here init routine for your board
 *  \param none
 *  \return none
 */
void init() {

}

#endif

I have edited NVIC_set_all_priorities.h since my LPC1768 board is supported:

#ifndef SET_ALL_PRIO
#define SET_ALL_PRIO

#include "mbed.h"

enum FIRST_LAST_IRQ {
#define LPC176X
     first_IRQ_number = SysTick_IRQn,
     last_IRQ_number  = CANActivity_IRQn,
};
void NVIC_set_all_irq_priorities(int priority);

#endif // SET_ALL_PRIO

However running the helloworld program doesn't give me any results. Tera Term prints out "cc3000 Hello World demo." however it doesn't print if the cc3000 module has successfully connected or failed to connect. Either the program is somehow stuck, it is in a loop, or my terminal is just not printing a response. I've set my baud rate on Tera Term correctly and the cc3000 has a 5v 1A external power supply.

If anyone has the experience to help me get my sparkfun module working I would really really appreciate it. Thank you so much!

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