140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
/*
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Tests for the spi_master device driver
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*/
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#include <esp_types.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <malloc.h>
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#include <string.h>
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#include "rom/ets_sys.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/semphr.h"
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#include "freertos/queue.h"
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#include "freertos/xtensa_api.h"
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#include "unity.h"
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#include "driver/spi_master.h"
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#include "soc/dport_reg.h"
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#include "soc/spi_reg.h"
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#include "soc/spi_struct.h"
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static void check_spi_pre_n_for(int clk, int pre, int n)
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{
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esp_err_t ret;
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spi_device_handle_t handle;
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spi_device_interface_config_t devcfg={
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.command_bits=0,
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.address_bits=0,
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.dummy_bits=0,
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.clock_speed_hz=clk,
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.duty_cycle_pos=128,
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.mode=0,
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.spics_io_num=21,
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.queue_size=3
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};
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char sendbuf[16]="";
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spi_transaction_t t;
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memset(&t, 0, sizeof(t));
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ret=spi_bus_add_device(HSPI_HOST, &devcfg, &handle);
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TEST_ASSERT(ret==ESP_OK);
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t.length=16*8;
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t.tx_buffer=sendbuf;
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ret=spi_device_transmit(handle, &t);
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printf("Checking clk rate %dHz. expect pre %d n %d, got pre %d n %d\n", clk, pre, n, SPI2.clock.clkdiv_pre+1, SPI2.clock.clkcnt_n+1);
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TEST_ASSERT(SPI2.clock.clkcnt_n+1==n);
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TEST_ASSERT(SPI2.clock.clkdiv_pre+1==pre);
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ret=spi_bus_remove_device(handle);
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TEST_ASSERT(ret==ESP_OK);
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}
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TEST_CASE("SPI Master clockdiv calculation routines", "[spi]")
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{
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spi_bus_config_t buscfg={
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.mosi_io_num=4,
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.miso_io_num=16,
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.sclk_io_num=25,
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.quadwp_io_num=-1,
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.quadhd_io_num=-1
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};
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esp_err_t ret;
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ret=spi_bus_initialize(HSPI_HOST, &buscfg, 1);
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TEST_ASSERT(ret==ESP_OK);
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check_spi_pre_n_for(8000000, 1, 10);
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check_spi_pre_n_for(800000, 2, 50);
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check_spi_pre_n_for(100000, 16, 50);
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check_spi_pre_n_for(333333, 4, 60);
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check_spi_pre_n_for(1, 8192, 64); //Actually should generate the minimum clock speed, 152Hz
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ret=spi_bus_free(HSPI_HOST);
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TEST_ASSERT(ret==ESP_OK);
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}
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TEST_CASE("SPI Master test", "[spi][ignore]")
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{
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spi_bus_config_t buscfg={
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.mosi_io_num=4,
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.miso_io_num=16,
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.sclk_io_num=25,
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.quadwp_io_num=-1,
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.quadhd_io_num=-1
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};
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spi_device_interface_config_t devcfg={
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.command_bits=8,
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.address_bits=64,
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.dummy_bits=0,
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.clock_speed_hz=8000,
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.duty_cycle_pos=128,
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.mode=0,
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.spics_io_num=21,
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.queue_size=3
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};
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esp_err_t ret;
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spi_device_handle_t handle;
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printf("THIS TEST NEEDS A JUMPER BETWEEN IO4 AND IO16\n");
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ret=spi_bus_initialize(HSPI_HOST, &buscfg, 1);
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TEST_ASSERT(ret==ESP_OK);
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ret=spi_bus_add_device(HSPI_HOST, &devcfg, &handle);
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TEST_ASSERT(ret==ESP_OK);
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printf("Bus/dev inited.\n");
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spi_transaction_t t;
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char sendbuf[16]="Hello World!";
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char recvbuf[16]="UUUUUUUUUUUUUUU";
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memset(&t, 0, sizeof(t));
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t.length=16*8;
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t.tx_buffer=sendbuf;
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t.rx_buffer=recvbuf;
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t.address=0xA00000000000000FL;
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t.command=0x55;
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printf("Transmit...\n");
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ret=spi_device_transmit(handle, &t);
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TEST_ASSERT(ret==ESP_OK);
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printf("Send vs recv:\n");
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for (int x=0; x<16; x++) printf("%02X ", (int)sendbuf[x]);
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printf("<sent\n");
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for (int x=0; x<16; x++) printf("%02X ", (int)recvbuf[x]);
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printf("<recv\n");
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ret=spi_bus_remove_device(handle);
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TEST_ASSERT(ret==ESP_OK);
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ret=spi_bus_free(HSPI_HOST);
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TEST_ASSERT(ret==ESP_OK);
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TEST_ASSERT_EQUAL_INT8_ARRAY(sendbuf, recvbuf, 16);
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}
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