UART firmware for testing in hardware
Stefan Schuermans commited on 2012-02-20 14:17:12
Showing 3 changed files, with 41 additions and 10 deletions.
| ... | ... |
@@ -4,10 +4,10 @@ |
| 4 | 4 |
#include "uart.h" |
| 5 | 5 |
#include "switches.h" |
| 6 | 6 |
|
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-//#define CFG_DELAY |
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-//#define CFG_LCD |
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+#define CFG_DELAY |
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+#define CFG_LCD |
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#define CFG_UART |
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-#define CFG_UART_CHK |
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+//#define CFG_UART_CHK |
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| 11 | 11 |
|
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const int myconst = 0x12345678; |
| 13 | 13 |
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| ... | ... |
@@ -54,6 +54,7 @@ void delay(void) |
| 54 | 54 |
int main() |
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{
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unsigned int i; |
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+ unsigned char leds; |
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| 57 | 58 |
|
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for (i = 0; i < sizeof(data) / sizeof(data[0]); ++i) |
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data[i] = i; |
| ... | ... |
@@ -88,16 +89,16 @@ int main() |
| 88 | 89 |
#endif |
| 89 | 90 |
#endif |
| 90 | 91 |
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+ leds = 0x11; |
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while (1) {
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- for (i = 0x1; i < 0x80; i <<= 1) {
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- leds_set_state(i); |
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- delay(); |
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- } |
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- for (i = 0x80; i > 0x1; i >>= 1) {
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- leds_set_state(i); |
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+#ifdef CFG_UART |
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+ if (uart_can_rx()) |
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+ leds = uart_rx(); |
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+#endif |
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+ leds_set_state(leds); |
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+ leds = leds << 1 | leds >> 7; |
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delay(); |
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} |
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- } |
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| 101 | 102 |
|
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return 0; |
| 103 | 104 |
} |
| ... | ... |
@@ -30,6 +30,15 @@ void uart_cfg_stop(unsigned char stop) |
| 30 | 30 |
*(uart_ptr + 3) = stop; |
| 31 | 31 |
} |
| 32 | 32 |
|
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+/** |
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+ * @brief check if transmitting a character is possible |
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+ * @return if transmitting a character is possible |
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+ */ |
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+int uart_can_tx(void) |
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+{
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+ return *(uart_ptr + 4); |
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+} |
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+ |
|
| 33 | 42 |
/** |
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* @brief transmit a character |
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* @param[in] chr character to transmit |
| ... | ... |
@@ -40,6 +49,15 @@ void uart_tx(unsigned short chr) |
| 40 | 49 |
*(unsigned short *)(uart_ptr + 8) = chr; /* write data */ |
| 41 | 50 |
} |
| 42 | 51 |
|
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+/** |
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+ * @brief check if receiving a character is possible |
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+ * @return if receiving a character is possible |
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+ */ |
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+int uart_can_rx(void) |
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+{
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+ return *(uart_ptr + 5); |
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+} |
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+ |
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| 43 | 61 |
/** |
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* @brief receive a character |
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* @return character received |
| ... | ... |
@@ -19,12 +19,24 @@ void uart_cfg_bits(unsigned char bits); |
| 19 | 19 |
*/ |
| 20 | 20 |
void uart_cfg_stop(unsigned char stop); |
| 21 | 21 |
|
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+/** |
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+ * @brief check if transmitting a character is possible |
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+ * @return if transmitting a character is possible |
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+ */ |
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+int uart_can_tx(void); |
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+ |
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/** |
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* @brief transmit a character |
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* @param[in] chr character to transmit |
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*/ |
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void uart_tx(unsigned short chr); |
| 27 | 33 |
|
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+/** |
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+ * @brief check if receiving a character is possible |
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+ * @return if receiving a character is possible |
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+ */ |
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+int uart_can_rx(void); |
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+ |
|
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/** |
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* @brief receive a character |
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* @return character received |
| 31 | 43 |