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Merge pull request #1826 from PeterKietzmann/extend_test_periph_spi

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tests/periph_spi: print rx-buffer on slave
This commit is contained in:
Hauke Petersen 2014-11-06 16:47:12 +01:00
commit 71568466b5
1 changed files with 22 additions and 0 deletions
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22
tests/periph_spi/main.c
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@ -44,6 +44,8 @@ static int spi_speed = -1;
static int spi_master = -1; /* 0 for slave, 1 for master, -1 for not initialized */
static char buffer[256]; /* temporary buffer */
static char rx_buffer[256]; /* global receive buffer */
static int rx_counter = 0;
static volatile int state;
static char* mem = "Hello Master! abcdefghijklmnopqrstuvwxyz 0123456789 ABCDEFGHIJKLMNOPQRSTUVWXYZ";
@ -140,6 +142,12 @@ void slave_on_cs(void *arg)
char slave_on_data(char data)
{
rx_buffer[rx_counter] = data;
rx_counter++;
if (rx_counter >= 256) {
rx_counter = 0;
}
switch (rw) {
case READ:
return mem[state++];
@ -239,6 +247,19 @@ void cmd_transfer(int argc, char **argv)
}
}
void cmd_print(int argc, char **argv)
{
if (spi_master != 0) {
puts("error: node is not initialized as slave");
}
else {
printf("Received %i bytes:\n", rx_counter);
print_bytes("MOSI", rx_buffer, rx_counter);
}
rx_counter = 0;
memset(&rx_buffer, 0, 256);
}
int shell_getchar(void)
{
return (int)getchar();
@ -253,6 +274,7 @@ static const shell_command_t shell_commands[] = {
{ "init_master", "Initialize node as SPI master", cmd_init_master },
{ "init_slave", "Initialize node as SPI slave", cmd_init_slave },
{ "send", "Transfer string to slave (only in master mode)", cmd_transfer },
{ "print_rx", "Print the received string (only in slave mode)", cmd_print },
{ NULL, NULL, NULL }
};