Sean Burford / i2c_pullup

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Dependencies:   max32625pico maxim-dev mbed-rtos USBDevice

Fork of PICO_USB_I2C_SPI by Greg Steiert

main.cpp@14:7a4b0f9d1474, 2017-11-20 (annotated)

Committer:
seanburford
Date:
Mon Nov 20 03:29:34 2017 +0000
Revision:
14:7a4b0f9d1474
Parent:
13:fed6ff32bf5d
Child:
15:9801f08ce0ee
SImple I2C pullup test case

Who changed what in which revision?

UserRevisionLine numberNew contents of line
switches 0:60a522ae2e35 1 #include "mbed.h"
switches 13:fed6ff32bf5d 2 #include "rtos.h"
switches 3:aa55728c8e09 3
seanburford 14:7a4b0f9d1474 4 #include "gpio_api.h"
seanburford 14:7a4b0f9d1474 5 #include "max32625pico.h"
switches 5:2436ae0a9eb1 6
seanburford 14:7a4b0f9d1474 7 // #define MAX_GPIO_API 1
seanburford 14:7a4b0f9d1474 8 #define MAX_I2C_API 1
switches 3:aa55728c8e09 9
seanburford 14:7a4b0f9d1474 10 static DigitalOut rLED(LED1);
seanburford 14:7a4b0f9d1474 11 static DigitalOut gLED(LED2);
seanburford 14:7a4b0f9d1474 12 static DigitalOut bLED(LED3);
switches 5:2436ae0a9eb1 13
switches 0:60a522ae2e35 14 int main()
switches 0:60a522ae2e35 15 {
switches 2:57500e991166 16 rLED = LED_ON;
switches 2:57500e991166 17 gLED = LED_ON;
switches 2:57500e991166 18 bLED = LED_OFF;
switches 3:aa55728c8e09 19
seanburford 14:7a4b0f9d1474 20 MAX32625PICO pico(
seanburford 14:7a4b0f9d1474 21 MAX32625PICO::IOH_3V3, MAX32625PICO::VIO_IOH, MAX32625PICO::VIO_IOH);
switches 0:60a522ae2e35 22
seanburford 14:7a4b0f9d1474 23 #ifdef MAX_GPIO_API
seanburford 14:7a4b0f9d1474 24 gpio_t gpio_p1_6;
seanburford 14:7a4b0f9d1474 25 gpio_t gpio_p1_7;
seanburford 14:7a4b0f9d1474 26 gpio_init(&gpio_p1_6, P1_6);
seanburford 14:7a4b0f9d1474 27 gpio_init(&gpio_p1_7, P1_7);
seanburford 14:7a4b0f9d1474 28 // gpio_api.c:104 sets the pin to MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP
seanburford 14:7a4b0f9d1474 29 pin_dir_mode(P1_6, PIN_INPUT, PullUp);
seanburford 14:7a4b0f9d1474 30 pin_dir_mode(P1_7, PIN_INPUT, PullUp);
seanburford 14:7a4b0f9d1474 31 #else
seanburford 14:7a4b0f9d1474 32 DigitalInOut(P1_6, PIN_INPUT, PullUp, 1);
seanburford 14:7a4b0f9d1474 33 DigitalInOut(P1_7, PIN_INPUT, PullUp, 1);
seanburford 14:7a4b0f9d1474 34 #endif
seanburford 14:7a4b0f9d1474 35
seanburford 14:7a4b0f9d1474 36 Thread::wait(15);
seanburford 14:7a4b0f9d1474 37
seanburford 14:7a4b0f9d1474 38 #ifdef MAX_I2C_API
seanburford 14:7a4b0f9d1474 39 i2c_t i2c_o;
seanburford 14:7a4b0f9d1474 40 i2c_init(&i2c_o, P1_6, P1_7);
seanburford 14:7a4b0f9d1474 41 #else
seanburford 14:7a4b0f9d1474 42 I2C i2c(P1_6, P1_7);
seanburford 14:7a4b0f9d1474 43 #endif
switches 2:57500e991166 44
switches 2:57500e991166 45 rLED = LED_OFF;
seanburford 14:7a4b0f9d1474 46 gLED = LED_OFF;
switches 5:2436ae0a9eb1 47
seanburford 14:7a4b0f9d1474 48 char dbuf[32];
switches 1:6923b075c8d7 49 while(1) {
seanburford 14:7a4b0f9d1474 50 Thread::wait(15);
seanburford 14:7a4b0f9d1474 51 #ifdef MAX_I2C_API
seanburford 14:7a4b0f9d1474 52 if (i2c_read(&i2c_o, 0x55, dbuf, 8, 1) > 0) {
seanburford 14:7a4b0f9d1474 53 #else
seanburford 14:7a4b0f9d1474 54 if (i2c.read(0x55, dbuf, 8) == 0) {
seanburford 14:7a4b0f9d1474 55 #endif
seanburford 14:7a4b0f9d1474 56 gLED = !gLED;
seanburford 14:7a4b0f9d1474 57 } else {
seanburford 14:7a4b0f9d1474 58 rLED = !rLED;
seanburford 14:7a4b0f9d1474 59 }
switches 0:60a522ae2e35 60 }
switches 0:60a522ae2e35 61 }
switches 0:60a522ae2e35 62