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The AD7705 are complete analog front ends for low frequency measurement applications. These 2-/3-channel devices can accept low level input signals directly from a transducer and produce serial digital output. The devices employ a Σ-Δ conversion technique to realize up to 16 bits of no missing codes performance. The selected input signal is applied to a proprietary, programmable-gain front end based around an analog modulator. The modulator output is processed by an on chip digital filter. The first notch of this digital filter can be programmed via an on-chip control register, allowing adjustment of the filter cutoff and output update rate.
LibDriver AD7705 is a full-featured driver for AD7705, launched by LibDriver.It provides ADC reading and additional features. LibDriver is MISRA compliant.
/src includes LibDriver AD7705 source files.
/interface includes LibDriver AD7705 SPI platform independent template.
/test includes LibDriver AD7705 driver test code and this code can test the chip necessary function simply.
/example includes LibDriver AD7705 sample code.
/doc includes LibDriver AD7705 offline document.
/datasheet includes AD7705 datasheet.
/project includes the common Linux and MCU development board sample code. All projects use the shell script to debug the driver and the detail instruction can be found in each project's README.md.
/misra includes the LibDriver MISRA code scanning results.
Reference /interface SPI platform independent template and finish your platform SPI driver.
Add the /src directory, the interface driver for your platform, and your own drivers to your project, if you want to use the default example drivers, add the /example directory to your project.
You can refer to the examples in the /example directory to complete your own driver. If you want to use the default programming examples, here's how to use them.
#include "driver_ad7705_basic.h"
uint8_t res;
uint32_t i;
/* init */
res = ad7705_basic_init(AD7705_CHANNEL_AIN1_POSITIVE_AIN1_NEGATIVE);
if (res != 0)
{
return 1;
}
...
/* loop */
for (i = 0; i < 3; i++)
{
uint16_t raw;
float volt;
/* read data */
res = ad7705_basic_read(&raw, &volt);
if (res != 0)
{
(void)ad7705_basic_deinit();
return 1;
}
/* output */
ad7705_interface_debug_print("%d/%d %0.5fV.\n", i + 1, 3, volt);
/* delay 1000ms */
ad7705_interface_delay_ms(1000);
...
}
...
/* deinit */
(void)ad7705_basic_deinit();
return 0;Online documents: https://www.libdriver.com/docs/ad7705/index.html.
Offline documents: /doc/html/index.html.
Please refer to CONTRIBUTING.md.
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