261 lines
6.9 KiB
C
261 lines
6.9 KiB
C
/*
|
|
Tests for the spi_master device driver
|
|
*/
|
|
|
|
#include <esp_types.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <malloc.h>
|
|
#include <string.h>
|
|
#include "rom/ets_sys.h"
|
|
#include "freertos/FreeRTOS.h"
|
|
#include "freertos/task.h"
|
|
#include "freertos/semphr.h"
|
|
#include "freertos/queue.h"
|
|
#include "freertos/xtensa_api.h"
|
|
#include "unity.h"
|
|
#include "driver/spi_master.h"
|
|
#include "soc/dport_reg.h"
|
|
#include "soc/spi_reg.h"
|
|
#include "soc/spi_struct.h"
|
|
#include "esp_heap_alloc_caps.h"
|
|
|
|
|
|
static void check_spi_pre_n_for(int clk, int pre, int n)
|
|
{
|
|
esp_err_t ret;
|
|
spi_device_handle_t handle;
|
|
|
|
spi_device_interface_config_t devcfg={
|
|
.command_bits=0,
|
|
.address_bits=0,
|
|
.dummy_bits=0,
|
|
.clock_speed_hz=clk,
|
|
.duty_cycle_pos=128,
|
|
.mode=0,
|
|
.spics_io_num=21,
|
|
.queue_size=3
|
|
};
|
|
char sendbuf[16]="";
|
|
spi_transaction_t t;
|
|
memset(&t, 0, sizeof(t));
|
|
|
|
ret=spi_bus_add_device(HSPI_HOST, &devcfg, &handle);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
|
|
t.length=16*8;
|
|
t.tx_buffer=sendbuf;
|
|
ret=spi_device_transmit(handle, &t);
|
|
|
|
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);
|
|
|
|
TEST_ASSERT(SPI2.clock.clkcnt_n+1==n);
|
|
TEST_ASSERT(SPI2.clock.clkdiv_pre+1==pre);
|
|
|
|
ret=spi_bus_remove_device(handle);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
}
|
|
|
|
|
|
TEST_CASE("SPI Master clockdiv calculation routines", "[spi]")
|
|
{
|
|
spi_bus_config_t buscfg={
|
|
.mosi_io_num=4,
|
|
.miso_io_num=26,
|
|
.sclk_io_num=25,
|
|
.quadwp_io_num=-1,
|
|
.quadhd_io_num=-1
|
|
};
|
|
esp_err_t ret;
|
|
ret=spi_bus_initialize(HSPI_HOST, &buscfg, 1);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
|
|
check_spi_pre_n_for(26000000, 1, 3);
|
|
check_spi_pre_n_for(20000000, 1, 4);
|
|
check_spi_pre_n_for(8000000, 1, 10);
|
|
check_spi_pre_n_for(800000, 2, 50);
|
|
check_spi_pre_n_for(100000, 16, 50);
|
|
check_spi_pre_n_for(333333, 4, 60);
|
|
check_spi_pre_n_for(900000, 2, 44);
|
|
check_spi_pre_n_for(1, 8192, 64); //Actually should generate the minimum clock speed, 152Hz
|
|
check_spi_pre_n_for(26000000, 1, 3);
|
|
|
|
ret=spi_bus_free(HSPI_HOST);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
}
|
|
|
|
static spi_device_handle_t setup_spi_bus(int clkspeed, bool dma) {
|
|
spi_bus_config_t buscfg={
|
|
.mosi_io_num=4,
|
|
.miso_io_num=26,
|
|
.sclk_io_num=25,
|
|
.quadwp_io_num=-1,
|
|
.quadhd_io_num=-1,
|
|
.max_transfer_sz=4096*3
|
|
};
|
|
spi_device_interface_config_t devcfg={
|
|
.command_bits=0,
|
|
.address_bits=0,
|
|
.dummy_bits=0,
|
|
.clock_speed_hz=clkspeed,
|
|
.duty_cycle_pos=128,
|
|
.mode=0,
|
|
.spics_io_num=21,
|
|
.queue_size=3,
|
|
};
|
|
esp_err_t ret;
|
|
spi_device_handle_t handle;
|
|
printf("THIS TEST NEEDS A JUMPER BETWEEN IO4 AND IO26\n");
|
|
|
|
ret=spi_bus_initialize(HSPI_HOST, &buscfg, dma?1:0);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
ret=spi_bus_add_device(HSPI_HOST, &devcfg, &handle);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
printf("Bus/dev inited.\n");
|
|
return handle;
|
|
}
|
|
|
|
static void spi_test(spi_device_handle_t handle, int num_bytes) {
|
|
esp_err_t ret;
|
|
int x;
|
|
srand(num_bytes);
|
|
char *sendbuf=pvPortMallocCaps(num_bytes, MALLOC_CAP_DMA);
|
|
char *recvbuf=pvPortMallocCaps(num_bytes, MALLOC_CAP_DMA);
|
|
for (x=0; x<num_bytes; x++) {
|
|
sendbuf[x]=rand()&0xff;
|
|
recvbuf[x]=0x55;
|
|
}
|
|
|
|
spi_transaction_t t;
|
|
memset(&t, 0, sizeof(t));
|
|
t.length=num_bytes*8;
|
|
t.tx_buffer=sendbuf;
|
|
t.rx_buffer=recvbuf;
|
|
t.address=0xA00000000000000FL;
|
|
t.command=0x55;
|
|
|
|
printf("Transmitting %d bytes...\n", num_bytes);
|
|
ret=spi_device_transmit(handle, &t);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
|
|
srand(num_bytes);
|
|
for (x=0; x<num_bytes; x++) {
|
|
if (sendbuf[x]!=(rand()&0xff)) {
|
|
printf("Huh? Sendbuf corrupted at byte %d\n", x);
|
|
TEST_ASSERT(0);
|
|
}
|
|
if (sendbuf[x]!=recvbuf[x]) break;
|
|
}
|
|
if (x!=num_bytes) {
|
|
int from=x-16;
|
|
if (from<0) from=0;
|
|
printf("Error at %d! Sent vs recved: (starting from %d)\n" , x, from);
|
|
for (int i=0; i<32; i++) {
|
|
if (i+from<num_bytes) printf("%02X ", sendbuf[from+i]);
|
|
}
|
|
printf("\n");
|
|
for (int i=0; i<32; i++) {
|
|
if (i+from<num_bytes) printf("%02X ", recvbuf[from+i]);
|
|
}
|
|
printf("\n");
|
|
// TEST_ASSERT(0);
|
|
}
|
|
|
|
printf("Success!\n");
|
|
|
|
free(sendbuf);
|
|
free(recvbuf);
|
|
}
|
|
|
|
static void destroy_spi_bus(spi_device_handle_t handle) {
|
|
esp_err_t ret;
|
|
ret=spi_bus_remove_device(handle);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
ret=spi_bus_free(HSPI_HOST);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
}
|
|
|
|
|
|
#define TEST_LEN 111
|
|
|
|
TEST_CASE("SPI Master test", "[spi][ignore]")
|
|
{
|
|
printf("Testing bus at 80KHz\n");
|
|
spi_device_handle_t handle=setup_spi_bus(80000, true);
|
|
spi_test(handle, 16); //small
|
|
spi_test(handle, 21); //small, unaligned
|
|
spi_test(handle, 36); //aligned
|
|
spi_test(handle, 128); //aligned
|
|
spi_test(handle, 129); //unaligned
|
|
spi_test(handle, 4096-2); //multiple descs, edge case 1
|
|
spi_test(handle, 4096-1); //multiple descs, edge case 2
|
|
spi_test(handle, 4096*3); //multiple descs
|
|
|
|
destroy_spi_bus(handle);
|
|
|
|
printf("Testing bus at 80KHz, non-DMA\n");
|
|
handle=setup_spi_bus(80000, false);
|
|
spi_test(handle, 4); //aligned
|
|
spi_test(handle, 16); //small
|
|
spi_test(handle, 21); //small, unaligned
|
|
|
|
destroy_spi_bus(handle);
|
|
|
|
|
|
printf("Testing bus at 26MHz\n");
|
|
handle=setup_spi_bus(20000000, true);
|
|
|
|
spi_test(handle, 128); //DMA, aligned
|
|
spi_test(handle, 4096*3); //DMA, multiple descs
|
|
destroy_spi_bus(handle);
|
|
|
|
printf("Testing bus at 900KHz\n");
|
|
handle=setup_spi_bus(9000000, true);
|
|
|
|
spi_test(handle, 128); //DMA, aligned
|
|
spi_test(handle, 4096*3); //DMA, multiple descs
|
|
destroy_spi_bus(handle);
|
|
}
|
|
|
|
|
|
TEST_CASE("SPI Master test, interaction of multiple devs", "[spi][ignore]") {
|
|
esp_err_t ret;
|
|
spi_device_interface_config_t devcfg={
|
|
.command_bits=0,
|
|
.address_bits=0,
|
|
.dummy_bits=0,
|
|
.clock_speed_hz=1000000,
|
|
.duty_cycle_pos=128,
|
|
.mode=0,
|
|
.spics_io_num=23,
|
|
.queue_size=3,
|
|
};
|
|
spi_device_handle_t handle1=setup_spi_bus(80000, true);
|
|
spi_device_handle_t handle2;
|
|
spi_bus_add_device(HSPI_HOST, &devcfg, &handle2);
|
|
|
|
printf("Sending to dev 1\n");
|
|
spi_test(handle1, 7);
|
|
printf("Sending to dev 1\n");
|
|
spi_test(handle1, 15);
|
|
printf("Sending to dev 2\n");
|
|
spi_test(handle2, 15);
|
|
printf("Sending to dev 1\n");
|
|
spi_test(handle1, 32);
|
|
printf("Sending to dev 2\n");
|
|
spi_test(handle2, 32);
|
|
printf("Sending to dev 1\n");
|
|
spi_test(handle1, 63);
|
|
printf("Sending to dev 2\n");
|
|
spi_test(handle2, 63);
|
|
printf("Sending to dev 1\n");
|
|
spi_test(handle1, 5000);
|
|
printf("Sending to dev 2\n");
|
|
spi_test(handle2, 5000);
|
|
|
|
|
|
ret=spi_bus_remove_device(handle2);
|
|
TEST_ASSERT(ret==ESP_OK);
|
|
destroy_spi_bus(handle1);
|
|
}
|
|
|