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fixed i2cdemo to supply 1V8 for Si5351C output supply

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This commit is contained in:
Michael Ossmann 2012-06-04 16:41:12 -06:00
parent 21304c01b6
commit 44db38301c
2 changed files with 33 additions and 1 deletions
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1
examples/lpc43xx/hackrf-jellybean/i2c/README
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@ -11,4 +11,5 @@ Required Lemondrop -> Jellybean connections:
SCL: Lemondrop P7 pin 3 -> Jellybean P6 pin 3
SDA: Lemondrop P7 pin 5 -> Jellybean P6 pin 5
VCC: Lemondrop P4 pin 2, 4, or 6 -> Jellybean P17 pin 2, 4, or 6
1V8: Lemondrop P11 pin 2, 4, or 6 -> Jellybean P16 pin 2, 4, or 6
GND: Lemondrop P5 -> Jellybean P13

33
examples/lpc43xx/hackrf-jellybean/i2c/i2cdemo.c
View File

@ -23,9 +23,38 @@
#include <libopencm3/lpc43xx/cgu.h>
#include <libopencm3/lpc43xx/i2c.h>
#include "../jellybean_conf.h"
void gpio_setup(void)
{
GPIO2_DIR |= (1 << 1); /* Configure GPIO2[1] (P4_1) as output. */
/* Configure SCU Pin Mux as GPIO */
scu_pinmux(SCU_PINMUX_LED1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_LED3, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_EN1V8, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT0, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT1, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT2, SCU_GPIO_FAST);
scu_pinmux(SCU_PINMUX_BOOT3, SCU_GPIO_FAST);
/* Configure SCU I2C0 Peripheral */
SCU_SFSI2C0 = SCU_I2C0_NOMINAL;
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;
GPIO2_DIR = 0;
GPIO3_DIR = 0;
GPIO4_DIR = 0;
GPIO5_DIR = 0;
GPIO6_DIR = 0;
GPIO7_DIR = 0;
/* Configure GPIO as Output */
GPIO2_DIR |= (PIN_LED1|PIN_LED2|PIN_LED3); /* Configure GPIO2[1/2/8] (P4_1/2 P6_12) as output. */
GPIO3_DIR |= PIN_EN1V8; /* GPIO3[6] on P6_10 as output. */
}
//FIXME generalize and move to drivers
@ -174,6 +203,8 @@ int main(void)
gpio_setup();
i2c0_init();
gpio_set(PORT_EN1V8, PIN_EN1V8); /* 1V8 on */
while (1) {
if (si5351c_read_reg(0) == 0x10)
gpio_set(GPIO2, GPIOPIN1); /* LED on */