generated from Embedded_Projects/NUC200_Template
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
#include "FreeRTOS.h"
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#include "NUC200Series.h"
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#include "pn512.h"
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#include "task.h"
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#define NFC_RESET_GPIO PA
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#define NFC_RESET_PIN BIT15
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/* PN512 has a strange SPI timing, see DS § 9.2 */
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/* **Stop it, Get some help.** */
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pn512_ret_t nfc_impl_reset_ops(void *handle) {
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/* Clear nRSTPD */
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NFC_RESET_GPIO->DOUT &= ~(NFC_RESET_PIN);
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/* ..Sleep for a while */
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vTaskDelay(pdMS_TO_TICKS(5));
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/* Set nRSTPD */
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NFC_RESET_GPIO->DOUT |= NFC_RESET_PIN;
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return PN512_OK;
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}
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pn512_ret_t nfc_impl_delay_ops(void *handle, uint32_t msec) {
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/* .. */
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vTaskDelay(pdMS_TO_TICKS(msec));
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return PN512_OK;
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}
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pn512_ret_t nfc_impl_read_ops(void *handle, uint8_t reg, uint8_t *data, uint16_t len) {
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/*
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* SPI Read sequence(len + 1 bytes in total):
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* CS->LOW
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* MOSI send 1st address byte, ignore MISO data.
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* MISO receive `len` bytes, while MOSI repeats 1st byte data.
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* CS->HIGH
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*/
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/* .. */
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return PN512_OK;
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}
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pn512_ret_t nfc_impl_write_ops(void *handle, uint8_t reg, uint8_t *data, uint16_t len) {
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/*
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* SPI Write sequence(len + 1 bytes in total):
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* CS->LOW
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* MOSI send 1st address byte, data payload follows.
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* CS->HIGH
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*/
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/* .. */
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return PN512_OK;
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}
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pn512_ret_t pn512_poll_irq_ops(void *handle, uint32_t max_timeout) {
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/*
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* Poll for GPIO interrupt
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* (Get Semaphore)
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*
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*/
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/* .. */
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return PN512_OK;
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}
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/* <-- SPI0_IRQHandler --> */
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void SPI0_IRQHandler(void) {
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/* DMA or FIFO xfer flags. */
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/* .. */
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}
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/* <-- EXTI --> */
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void GPAB_IRQHandler(void) { /* ??? Sasuga Nuvoton */ } |