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100 lines
2.2 KiB
100 lines
2.2 KiB
7 years ago
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// Created by MightyPork on 2018/02/03.
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//
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#include "platform.h"
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#include "unit_base.h"
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#define DAC_INTERNAL
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#include "_dac_internal.h"
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/** Allocate data structure and set defaults */
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error_t UDAC_preInit(Unit *unit)
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{
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struct priv *priv = unit->data = calloc_ck(1, sizeof(struct priv));
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if (priv == NULL) return E_OUT_OF_MEM;
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priv->cfg.ch1.buffered = true;
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priv->cfg.ch1.enable = true;
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priv->cfg.ch1.noise_level = 2;
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priv->cfg.ch1.noise_type = NOISE_NONE;
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priv->ch1.noise_type = priv->cfg.ch1.noise_type;
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priv->ch1.noise_level = priv->cfg.ch1.noise_level;
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priv->cfg.ch2.buffered = true;
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priv->cfg.ch2.enable = true;
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priv->cfg.ch2.noise_level = 2;
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priv->cfg.ch2.noise_type = NOISE_NONE;
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priv->ch2.noise_type = priv->cfg.ch2.noise_type;
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priv->ch2.noise_level = priv->cfg.ch2.noise_level;
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return E_SUCCESS;
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}
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/** Finalize unit set-up */
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error_t UDAC_init(Unit *unit)
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{
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bool suc = true;
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struct priv *priv = unit->data;
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// this may change for different devices
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const Resource r_ch1 = R_PA4;
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const Resource r_ch2 = R_PA5;
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const bool e1 = priv->cfg.ch1.enable;
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const bool e2 = priv->cfg.ch2.enable;
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if (e1) {
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TRY(rsc_claim(unit, r_ch1));
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}
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if (e2) {
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TRY(rsc_claim(unit, r_ch2));
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}
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TRY(rsc_claim(unit, R_DAC1));
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// ensure the peripheral is clean (this may be redundant)
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__HAL_RCC_DAC1_FORCE_RESET();
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__HAL_RCC_DAC1_RELEASE_RESET();
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hw_periph_clock_enable(DAC1);
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GPIO_TypeDef *port;
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uint32_t ll;
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if (e1) {
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assert_param(hw_pinrsc2ll(r_ch1, &port, &ll));
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LL_GPIO_SetPinMode(port, ll, LL_GPIO_MODE_ANALOG);
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}
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if (e2) {
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assert_param(hw_pinrsc2ll(r_ch1, &port, &ll));
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LL_GPIO_SetPinMode(port, ll, LL_GPIO_MODE_ANALOG);
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}
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UDAC_Reconfigure(unit);
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return E_SUCCESS;
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}
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/** Tear down the unit */
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void UDAC_deInit(Unit *unit)
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{
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struct priv *priv = unit->data;
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// de-init peripherals
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if (unit->status == E_SUCCESS ) {
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LL_DAC_DeInit(DAC);
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hw_periph_clock_disable(DAC1);
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}
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// Release all resources, deinit pins
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rsc_teardown(unit);
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// Free memory
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free_ck(unit->data);
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}
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