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fpga_test: Better SPI test routine

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We do longer transfers, actually check the data automatically and
report errors, and also execute the test 128 times to build some
confidence it's working reliably.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
This commit is contained in:
Sylvain Munaut 2022-05-17 11:02:38 +02:00
parent 9489194e27
commit eb28403e74
1 changed files with 49 additions and 23 deletions
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72
main/fpga_test.c
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@ -114,37 +114,56 @@ esp_err_t verify_file_in_psram(ICE40* ice40, FILE* fd) {
return ESP_OK;
}
void test_spi(ICE40* ice40) {
bool test_spi(ICE40* ice40) {
esp_err_t res;
uint8_t r1[8], r2[8];
uint8_t data0[8] = {0x01, 0x23, 0x45, 0x67, 0x01, 0x23, 0x45, 0x67};
uint8_t data1[8] = {0x89, 0xab, 0xcd, 0xef, 0x89, 0xab, 0xcd, 0xef};
uint8_t data_tx[256];
uint8_t data_rx[128];
res = ice40_send(ice40, data0, 8);
// Generate pseudo random sequence
data_tx[0] = 1;
for (int i = 1; i < 256; i++)
data_tx[i] = (data_tx[i-1] << 1) ^ ((data_tx[i-1] & 0x80) ? 0x1d : 0x00);
// Send first 128 byte at high speed
res = ice40_send_turbo(ice40, &data_tx[0], 128);
if (res != ESP_OK) {
ESP_LOGE(TAG, "Transaction 1 failed");
return;
ESP_LOGE(TAG, "Transaction 1 failed (Turbo TX)");
return false;
}
res = ice40_transaction(ice40, data1, 8, r1, 8);
// Execute full duplex transaction with next 128 bytes
res = ice40_transaction(ice40, &data_tx[128], 128, data_rx, 128);
if (res != ESP_OK) {
ESP_LOGE(TAG, "Transaction 2 failed");
return;
ESP_LOGE(TAG, "Transaction 2 failed (Full Duplex)");
return false;
}
printf("Transaction 2 result: ");
for (uint8_t i = 0; i < 8; i++) printf("%02X ", r1[i]);
printf("\n");
res = ice40_receive(ice40, r2, 8);
if (res != ESP_OK) {
ESP_LOGE(TAG, "Transaction 3 failed");
return;
// Validate RX data
if (memcmp(&data_rx[1], &data_tx[0], 127)) {
printf("Transaction 1->2 integrity fail:\n");
for (int i = 0; i < 128; i++)
printf("%02X%c", data_rx[i], ((i&0xf)==0xf) ? '\n' : ' ');
printf("\n");
return false;
}
printf("Transaction 3 result: ");
for (uint8_t i = 0; i < 8; i++) printf("%02X ", r2[i]);
printf("\n");
// Receive half duplex
res = ice40_receive(ice40, data_rx, 128);
if (res != ESP_OK) {
ESP_LOGE(TAG, "Transaction 3 failed (Half Duplex RX)");
return false;
}
// Validate RX data
if (memcmp(&data_rx[1], &data_tx[128], 127)) {
printf("Transaction 2->3 integrity fail:\n");
for (int i = 0; i < 128; i++)
printf("%02X%c", data_rx[i], ((i&0xf)==0xf) ? '\n' : ' ');
printf("\n");
return false;
}
return true;
}
void fpga_test(ILI9341* ili9341, ICE40* ice40, xQueueHandle buttonQueue) {
@ -170,8 +189,15 @@ void fpga_test(ILI9341* ili9341, ICE40* ice40, xQueueHandle buttonQueue) {
printf("Bitstream loaded succesfully!\n");
}
test_spi(ice40);
int i;
for (i = 0; i < 256; i++)
if (!test_spi(ice40))
break;
if (i == 256)
printf("SPI test success\n");
else
printf("SPI test failure at iteration %d\n", i);
bool waitForChoice = true;
while (waitForChoice) {
rp2040_input_message_t buttonMessage = {0};