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COX DAC Peripheral Interface
Version: 1.00 - 13. June 2010
Contents
Overview
A digital-to-analog converter (DAC or D-to-A) is a peripheral that converts a digital code to an analog signal (current, voltage, or electric charge).
Interface Definition
DAC Interface Definition : COX DAC Interface is a structure variable of COX_DAC_PI type, it contains a list of pointers to the functions that implement the standard functions specified by COX. Use different variables to access different DAC peripherals.
| Serial Interface |
typedef struct {
COX_Status (*Init) (void);
void (*Write) (uint16_t ad_out, uint32_t value);
COX_Status (*Cfg) (uint8_t index, uint32_t arg, uint32_t *pre_arg);
} COX_DAC_PI_Def;
typedef const COX_DAC_PI_Def COX_DAC_PI; |
| Member |
COX_Status (*Init) (void);
/* Initialize the DAC peripheral */
void (*Write) (uint16_t ad_out, uint32_t value);
/* Write value to DAC */
COX_Status (*Cfg) (uint8_t index, uint32_t arg, uint32_t *pre_arg);
/* Configure the peripheral */
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Global Define
| Name |
Description |
| COX_DAC_CFG_BITS |
Conversion Resolution |
Standard Function
| Name |
Description |
| Init |
Initialize the DAC peripheral |
| Write |
Write value to DAC |
| Cfg |
Configure the peripheral |
| COX_Status Init (uint32_t clock) |
| Description |
Initialize the Serial peripheral |
| Parameter |
clock: Conversion clock |
| Return Code |
COX_SUCCESS or COX_ERROR |
| void Write (uint16_t ad_out, uint32_t value) |
| Description |
Write value to DAC |
| Parameter |
ad_out : DAC ouput line
value : Value to be converted to output |
| Return Code |
None |
| COX_Status Cfg (uint8_t index, uint32_t arg, uint32_t *pre_arg) |
| Description |
Configure the peripheral |
| Parameter |
index : Configuration index, it should be :
- COX_DAC_CFG_BITS : Set Conversion Resolution
- COX_DAC_CFG_CURRENT : Maximum current output
arg : Configuration argument
pre_arg : Return previous configuration argument |
| Return Code |
COX_SUCCESS or COX_ERROR |
Available Interface
| Vendor |
Chip |
Interface |
Description |
| NXP |
LPC17xx Series |
pi_dac |
DAC Interface |
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COX Overview
ADC
