Hi,
I made the recommended change and it compiled normally, but I saw that the
code was missing the implementation of the CS signal, so I made the changes
below and it still didn't work. Does the code really work for the
nRF52832-DK? I used my logic analyzer and there is no information on the
data line, only 1 in the 8 bits, but there is the rise and fall of the
signal, I also checked the clock and it is ok! This is very confusing for
me, I thought it would be easier to use the example of this BMI160 sensor.
If you have any further help I would appreciate it again! Thanks!
============================== vi
./boards/arm/nrf52/nrf52832-dk/src/nrf52_bringup.c
#include "nrf52_spi.h"
#include <nuttx/sensors/bmi160.h>
int nrf52_bringup(void)
{
int ret;
...
...
...
struct spi_dev_s *dev = nrf52_spibus_initialize(0);
<<<----------- Added by me
ret = bmi160_register("/dev/accel0", dev);
<<<-----------
if (ret < 0)
<<<-----------
{
<<<-----------
syslog(LOG_ERR, "ERROR: bmi160_register failed: %d\n", ret);
<<<-----------
}
<<<-----------
...
...
...
}
============================== vi
./boards/arm/nrf52/nrf52832-dk/include/board.h
#define BOARD_SPI0_CS_PIN (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 |
GPIO_PIN(11)) <<<----------- Added by me
#define BOARD_SPI0_INT_PIN (GPIO_OUTPUT | GPIO_PORT0 | GPIO_PIN(12))
<<<-----------
vi ./arch/arm/src/board/board/nrf52832-dk.h e adicione as linhas abaixo:
/* BMI160 pins
* CS - P0.11
* INT - P0.12
*/
#define GPIO_BMI160_CS (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT0 |
GPIO_PIN(11)) <<<----------- Added by me
#define GPIO_BMI160_INT (GPIO_INPUT | GPIO_PORT0 | GPIO_PIN(12))
<<<-----------
============================== vi
./boards/arm/nrf52/nrf52832-dk/src/nrf52_spi.c
void nrf52_spidev_initialize(void)
{
#ifdef CONFIG_NRF52_SPI0_MASTER
# ifdef CONFIG_IEEE802154_MRF24J40
/* Configure the SPI-based MRF24J40 chip select GPIO */
spiinfo("Configure GPIO for MRF24J40 SPI1/CS\n");
nrf52_gpio_config(GPIO_MRF24J40_CS);
nrf52_gpio_write(GPIO_MRF24J40_CS, true);
# endif
# ifdef CONFIG_SENSORS_BMI160
<<<----------- Added by me
/* Configure the SPI-based BMI160 chip select GPIO */ <<<-----------
spiinfo("Configure GPIO for BMI160 SPI0/CS\n"); <<<-----------
nrf52_gpio_config(GPIO_BMI160_CS); <<<-----------
nrf52_gpio_write(GPIO_BMI160_CS, true); <<<-----------
# endif
<<<-----------
#endif
}
ifdef CONFIG_NRF52_SPI0_MASTER
void nrf52_spi0select(struct spi_dev_s *dev, uint32_t devid,
bool selected)
{
spiinfo("devid: %08lx CS: %s\n",
(unsigned long)devid, selected ? "assert" : "de-assert");
spiinfo("BMI160 device %s\n", <<<-----------
Added by me
selected ? "asserted" : "de-asserted"); <<<-----------
/* Set the GPIO low to select and high to de-select */ <<<-----------
nrf52_gpio_write(GPIO_BMI160_CS, !selected); <<<-----------
switch (devid)
{
#ifdef CONFIG_IEEE802154_MRF24J40
case SPIDEV_IEEE802154(0):
{
spiinfo("MRF24J40 device %s\n",
selected ? "asserted" : "de-asserted");
/* Set the GPIO low to select and high to de-select */
nrf52_gpio_write(GPIO_MRF24J40_CS, !selected);
break;
}
#endif
default:
{
break;
}
}
}
uint8_t nrf52_spi0status(struct spi_dev_s *dev, uint32_t devid)
{
uint8_t status = 0;
status |= SPI_STATUS_PRESENT; <<--------------------- Added by me
switch (devid)
{
#ifdef CONFIG_IEEE802154_MRF24J40
case SPIDEV_IEEE802154(0):
{
status |= SPI_STATUS_PRESENT;
break;
}
#endif
default:
{
break;
}
}
return status;
}
============================== vi ./arch/arm/src/nrf52/nrf52_spi.c
static void nrf52_spi_gpioinit(struct nrf52_spidev_s *priv)
{
nrf52_gpio_config(priv->sck_pin);
nrf52_spi_pselinit(priv, NRF52_SPIM_PSELSCK_OFFSET, priv->sck_pin);
#ifdef CONFIG_NRF52_SPI0_MASTER
if (priv == &g_spi0dev)
{
nrf52_gpio_config(BOARD_SPI0_CS_PIN); <<<-----------
Added by me
nrf52_spi_pselinit(priv, NRF52_SPIM_PSELCSN_OFFSET, <<<-----------
BOARD_SPI0_CS_PIN);
#ifdef BOARD_SPI0_MISO_PIN
nrf52_gpio_config(BOARD_SPI0_MISO_PIN);
nrf52_spi_pselinit(priv, NRF52_SPIM_PSELMISO_OFFSET,
BOARD_SPI0_MISO_PIN);
#endif
#ifdef BOARD_SPI0_MOSI_PIN
nrf52_gpio_config(BOARD_SPI0_MOSI_PIN);
nrf52_spi_pselinit(priv, NRF52_SPIM_PSELMOSI_OFFSET,
BOARD_SPI0_MOSI_PIN);
nrf52_gpio_write(BOARD_SPI0_MOSI_PIN, false);
#endif
}
#endif
================= Error on NSH Terminal =================
nsh>rf52_spidev_initialize: Configure GPIO for BMI160 SPI0/CS
nrf52_spi_setmode: mode=0
nrf52_spi_setfrequency: Frequency 1000000
nrf52_spi0select: devid: 000d0000 CS: assert
nrf52_spi0select: BMI160 device asserted
nrf52_spi_exchange: Incomplete transfer wrote 536915151 expected 1
nrf52_spi0select: devid: 000d0000 CS: de-assert
nrf52_spi0select: BMI160 device de-asserted
nrf52_spi_setmode: mode=0
nrf52_spi0select: devid: 000d0000 CS: assert
nrf52_spi0select: BMI160 device asserted
nrf52_spi_exchange: Incomplete transfer wrote 536915151 expected 1
nrf52_spi0select: devid: 000d0000 CS: de-assert
nrf52_spi0select: BMI160 device de-asserted
nrf52_spi_setmode: mode=0
nrf52_spi0select: devid: 000d0000 CS: assert
nrf52_spi0select: BMI160 device asserted
nrf52_spi_exchange: Incomplete transfer wrote 536915143 expected 1
nrf52_spi0select: devid: 000d0000 CS: de-assert
nrf52_spi0select: BMI160 device de-asserted
ERROR: bmi160_register failed: -19
Em seg., 26 de fev. de 2024 às 03:57, raiden00pl <raiden0...@gmail.com>
escreveu:
> You need to specify that SPI is used as master: CONFIG_NRF52_SPI0_MASTER=y
>
> niedz., 25 lut 2024 o 21:22 Mauro Sollar <maurosol...@gmail.com>
> napisał(a):
>
> > Hi,
> >
> > I'm trying to use the BMI160 sensor with the Nordic nRF52832-dk Kit, help
> > me please!
> >
> > Kconfig Configuration:
> >
> > System type
> > nRF52 Peripheral Selection
> > (*) SPI 0
> > Device Drivers
> > (*) SPI Driver Support
> > (*) SPI character driver
> > (*) Sensor Device Support
> > (*) Bosch BMI160 Inertial Measurement Sensor support
> > IO Expander/GPIO Support
> > (*) GPIO driver
> > Application Configuration
> > Examples
> > (*) BMI160
> >
> > I added the following lines to the file:
> > ./boards/arm/nrf52/nrf52832-dk/src/nrf52_bringup.c
> >
> >
> > int nrf52_bringup(void)
> > {
> > int ret;
> > ...
> > ...
> > ...
> >
> > struct spi_dev_s *dev = nrf52_spibus_initialize(0);
> > ret = bmi160_register("/dev/accel0", dev);
> > if (ret < 0)
> > {
> > syslog(LOG_ERR, "ERROR: bmi160_register failed: %d\n", ret);
> > }
> >
> > ...
> > ...
> > ...
> >
> >
> > }
> >
> > Show this error:
> >
> > board/nrf52_bringup.c:104:27: warning: implicit declaration of function
> > 'nrf52_spibus_initialize'; did you mean 'nrf52_spidev_initialize'?
> > [-Wimplicit-function-declaration]
> > 104 | struct spi_dev_s *dev = nrf52_spibus_initialize(0);
> > | ^~~~~~~~~~~~~~~~~~~~~~~
> > | nrf52_spidev_initialize
> > board/nrf52_bringup.c:104:27: warning: initialization of 'struct
> spi_dev_s
> > *' from 'int' makes pointer from integer without a cast
> [-Wint-conversion]
> > LD: nuttx
> > arm-none-eabi-ld:
> > /home/mauro/nuttxspace/nuttx/staging/libdrivers.a(bmi160_base.o): in
> > function `bmi160_getreg8':
> > /home/mauro/nuttxspace/nuttx/drivers/sensors/bmi160_base.c:87: undefined
> > reference to `bmi160_configspi'
> > arm-none-eabi-ld:
> > /home/mauro/nuttxspace/nuttx/staging/libdrivers.a(bmi160_base.o): in
> > function `bmi160_putreg8':
> > /home/mauro/nuttxspace/nuttx/drivers/sensors/bmi160_base.c:145: undefined
> > reference to `bmi160_configspi'
> > arm-none-eabi-ld:
> > /home/mauro/nuttxspace/nuttx/staging/libdrivers.a(bmi160_base.o): in
> > function `bmi160_getreg16':
> > /home/mauro/nuttxspace/nuttx/drivers/sensors/bmi160_base.c:205: undefined
> > reference to `bmi160_configspi'
> > arm-none-eabi-ld:
> > /home/mauro/nuttxspace/nuttx/staging/libdrivers.a(bmi160_base.o): in
> > function `bmi160_getregs':
> > /home/mauro/nuttxspace/nuttx/drivers/sensors/bmi160_base.c:265: undefined
> > reference to `bmi160_configspi'
> > make[1]: *** [Makefile:197: nuttx] Erro 1
> > make: *** [tools/Unix.mk:546: nuttx] Erro 2
> >
> >
> > thanks,
> > --
> > Mauro Costa Sollar
> > Cel.: 31 98894-2932
> >
>
--
Mauro Costa Sollar
Cel.: 31 98894-2932
