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BBSHD: Add DAC support 

Signed-off-by: Marcos Chaparro <mchaparro@powerdesigns.ca>
This commit is contained in:
Marcos Chaparro 2020-03-21 10:23:29 -03:00
parent 278f767854
commit c821710d49
2 changed files with 36 additions and 0 deletions
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33
hwconf/hw_luna_bbshd.c
View File

@ -28,6 +28,8 @@
// Variables // Variables
static volatile bool i2c_running = false; static volatile bool i2c_running = false;
void hw_luna_bbshd_setup_dac(void);
// I2C configuration // I2C configuration
static const I2CConfig i2cfg = { static const I2CConfig i2cfg = {
OPMODE_I2C, OPMODE_I2C,
@ -99,7 +101,11 @@ void hw_init_gpio(void) {
palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_ANALOG); palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_ANALOG); palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_ANALOG); palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_ANALOG);
#ifdef HW_BBSHD_USE_DAC
hw_luna_bbshd_setup_dac();
#else
palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG); palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
#endif
palSetPadMode(GPIOA, 6, PAL_MODE_INPUT_ANALOG); palSetPadMode(GPIOA, 6, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_ANALOG); palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_ANALOG);
@ -243,3 +249,30 @@ void hw_try_restore_i2c(void) {
i2cReleaseBus(&HW_I2C_DEV); i2cReleaseBus(&HW_I2C_DEV);
} }
} }
void hw_luna_bbshd_setup_dac(void) {
// GPIOA clock enable
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
// DAC Periph clock enable
RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
// DAC channel 1 & 2 (DAC_OUT1 = PA.4)(DAC_OUT2 = PA.5) configuration
palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
// Enable both DAC channels with output buffer disabled to achieve rail-to-rail output
DAC->CR |= DAC_CR_EN1 | DAC_CR_BOFF1 | DAC_CR_EN2 | DAC_CR_BOFF2;
// Set DAC channels at 1.65V
hw_luna_bbshd_DAC1_setdata(0x800);
hw_luna_bbshd_DAC2_setdata(0x800);
}
void hw_luna_bbshd_DAC1_setdata(uint16_t data) {
DAC->DHR12R1 = data;
}
void hw_luna_bbshd_DAC2_setdata(uint16_t data) {
DAC->DHR12R2 = data;
}

3
hwconf/hw_luna_bbshd.h
View File

@ -28,6 +28,7 @@
#define HW_HAS_PHASE_SHUNTS #define HW_HAS_PHASE_SHUNTS
#define HW_HAS_GATE_DRIVER_SUPPLY_MONITOR #define HW_HAS_GATE_DRIVER_SUPPLY_MONITOR
#define HW_USE_BRK #define HW_USE_BRK
#define HW_BBSHD_USE_DAC
// Macros // Macros
#define LED_GREEN_GPIO GPIOB #define LED_GREEN_GPIO GPIOB
@ -245,5 +246,7 @@
#define HW_GATE_DRIVER_SUPPLY_MAX_VOLTAGE 14.0 #define HW_GATE_DRIVER_SUPPLY_MAX_VOLTAGE 14.0
// HW-specific functions // HW-specific functions
void hw_luna_bbshd_DAC1_setdata(uint16_t data);
void hw_luna_bbshd_DAC2_setdata(uint16_t data);
#endif /* HW_LUNA_BBSHD_H_ */ #endif /* HW_LUNA_BBSHD_H_ */