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[example] minor edits

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stnolting 2024-07-21 17:37:01 +02:00
parent 9f212726cf
commit 7a194ddc44
2 changed files with 12 additions and 7 deletions
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17
sw/example/demo_cfu/main.c
View file

@ -34,12 +34,12 @@
* @name Define macros for easy CFU instruction wrapping
**************************************************************************/
/**@{*/
#define xtea_hw_init(sum) neorv32_cfu_r3_instr(0b0000000, 0b100, sum, 0)
#define xtea_hw_enc_v0_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b000, v0, v1)
#define xtea_hw_enc_v1_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b001, v0, v1)
#define xtea_hw_dec_v0_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b010, v0, v1)
#define xtea_hw_dec_v1_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b011, v0, v1)
#define xtea_hw_illegal_inst() neorv32_cfu_r3_instr(0b0000000, 0b111, 0, 0)
#define xtea_hw_init(sum) neorv32_cfu_r3_instr(0b0000000, 0b100, sum, 0 )
#define xtea_hw_enc_v0_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b000, v0, v1)
#define xtea_hw_enc_v1_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b001, v0, v1)
#define xtea_hw_dec_v0_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b010, v0, v1)
#define xtea_hw_dec_v1_step(v0, v1) neorv32_cfu_r3_instr(0b0000000, 0b011, v0, v1)
#define xtea_hw_illegal_inst() neorv32_cfu_r3_instr(0b0000000, 0b111, 0, 0 )
/**@}*/
// The CFU custom instructions can be used as plain C functions as they are simple "intrinsics".
@ -67,14 +67,19 @@
/**@{*/
/** XTEA delta (round-key update) */
const uint32_t xtea_delta = 0x9e3779b9;
/** Encryption/decryption key (128-bit) */
const uint32_t key[4] = {0x207230ba, 0x1ffba710, 0xc45271ef, 0xdd01768a};
/** Encryption input data */
uint32_t input_data[DATA_NUM];
/** Encryption results */
uint32_t cypher_data_sw[DATA_NUM], cypher_data_hw[DATA_NUM];
/** Decryption results */
uint32_t plain_data_sw[DATA_NUM], plain_data_hw[DATA_NUM];
/** Timing data */
uint32_t time_enc_sw, time_enc_hw, time_dec_sw, time_dec_hw;
/**@}*/

2
sw/example/demo_newlib/main.c
View file

@ -95,7 +95,7 @@ int main() {
// rand test
neorv32_uart0_printf("<rand> test... ");
srand(neorv32_cpu_csr_read(CSR_CYCLE)); // set random seed
srand(time(NULL)); // set random seed
neorv32_uart0_printf("%i, %i, %i, %i\n", rand() % 100, rand() % 100, rand() % 100, rand() % 100);