diff options
Diffstat (limited to 'projects/board-test/rtc-test.c')
| -rw-r--r-- | projects/board-test/rtc-test.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/projects/board-test/rtc-test.c b/projects/board-test/rtc-test.c new file mode 100644 index 0000000..b8a7511 --- /dev/null +++ b/projects/board-test/rtc-test.c @@ -0,0 +1,161 @@ +/* + * Test code for the RTC. + * + * Dumps the SRAM and EEPROM on startup, then enables the oscillator. + * After that, the clock registers are read once a second - the first byte + * is seconds (and some control bits, so dont expect 0..59). + * + */ +#include <string.h> + +#include "stm32f4xx_hal.h" +#include "stm-init.h" +#include "stm-led.h" +#include "stm-uart.h" +#include "stm-rtc.h" + +#define DELAY() HAL_Delay(1000) + + +uint8_t buf[1024]; +uint32_t i; + + +uint32_t device_ready(uint16_t i2c_addr) +{ + uart_send_string2(STM_UART_MGMT, "Checking readiness of 0x"); + uart_send_number2(STM_UART_MGMT, i2c_addr, 4, 16); + uart_send_string2(STM_UART_MGMT, "..."); + + if (rtc_device_ready(i2c_addr) == HAL_OK) { + uart_send_string2(STM_UART_MGMT, "OK\r\n"); + return 1; + } + + uart_send_string2(STM_UART_MGMT, "Not ready (0x"); + uart_send_number2(STM_UART_MGMT, i, 4, 16); + uart_send_string2(STM_UART_MGMT, ")\r\n"); + + return 0; +} + + +void send_byte(const uint16_t i2c_addr, const uint8_t value) +{ + uint8_t ch = value; + + uart_send_string2(STM_UART_MGMT, "Sending "); + uart_send_number2(STM_UART_MGMT, ch, 2, 16); + uart_send_string2(STM_UART_MGMT, " to 0x"); + uart_send_number2(STM_UART_MGMT, i2c_addr, 4, 16); + uart_send_string2(STM_UART_MGMT, "..."); + + if (rtc_send_byte(i2c_addr, ch, 1000) != HAL_OK) { + uart_send_string2(STM_UART_MGMT, "Timeout\r\n"); + Error_Handler(); + } + + uart_send_string2(STM_UART_MGMT, "OK\r\n"); +} + +void read_bytes (uint8_t *buf, const uint16_t i2c_addr, const uint8_t len) +{ + uart_send_string2(STM_UART_MGMT, "Reading "); + uart_send_number2(STM_UART_MGMT, len, 3, 10); + uart_send_string2(STM_UART_MGMT, " bytes from 0x"); + uart_send_number2(STM_UART_MGMT, i2c_addr, 4, 16); + uart_send_string2(STM_UART_MGMT, "..."); + + if (rtc_read_bytes(i2c_addr, buf, len, 1000) != HAL_OK) { + uart_send_string2(STM_UART_MGMT, "Timeout\r\n"); + Error_Handler(); + } + + uart_send_string2(STM_UART_MGMT, "OK\r\n"); +} + +void request_data(uint8_t *buf, const uint16_t i2c_addr, const uint8_t offset, const uint8_t bytes) +{ + send_byte(i2c_addr, offset); + read_bytes(buf, i2c_addr, bytes); +} + +void print_time() +{ + request_data(buf, RTC_RTC_ADDR, RTC_TIME_OFFSET, RTC_TIME_BYTES); + + for (i = 0; i < RTC_TIME_BYTES; i++) { + uart_send_number2(STM_UART_MGMT, buf[i], 2, 16); + uart_send_string2(STM_UART_MGMT, " "); + } +} + +void dump_sram() +{ + request_data(buf, RTC_RTC_ADDR, 0x0, RTC_SRAM_TOTAL_BYTES); + + uart_send_string2(STM_UART_MGMT, "SRAM contents:\r\n"); + uart_send_hexdump(STM_UART_MGMT, buf, 0, RTC_SRAM_TOTAL_BYTES); + + uart_send_string2(STM_UART_MGMT, "\r\n"); +} + +void dump_eeprom() +{ + request_data(buf, RTC_EEPROM_ADDR, 0x0, RTC_EEPROM_TOTAL_BYTES); + + uart_send_string2(STM_UART_MGMT, "EEPROM contents:\r\n"); + uart_send_hexdump(STM_UART_MGMT, buf, 0, RTC_EEPROM_TOTAL_BYTES); + uart_send_string2(STM_UART_MGMT, "\r\n"); + + request_data(buf, RTC_EEPROM_ADDR, RTC_EEPROM_EUI48_OFFSET, RTC_EEPROM_EUI48_BYTES); + uart_send_string2(STM_UART_MGMT, "EEPROM EUI-48:\r\n"); + uart_send_hexdump(STM_UART_MGMT, buf, RTC_EEPROM_EUI48_OFFSET, RTC_EEPROM_EUI48_BYTES); + + uart_send_string2(STM_UART_MGMT, "\r\n"); +} + +void enable_oscillator() +{ + uart_send_string2(STM_UART_MGMT, "Enabling oscillator...\r\n"); + + if (rtc_enable_oscillator() != HAL_OK) { + uart_send_string2(STM_UART_MGMT, "Timeout\r\n"); + Error_Handler(); + } + + uart_send_string2(STM_UART_MGMT, "OK\r\n"); +} + + +int +main() +{ + stm_init(); + uart_send_string2(STM_UART_MGMT, "\r\n\r\n*** Init done\r\n"); + + dump_sram(); + dump_eeprom(); + + enable_oscillator(); + + while (1) { + memset(buf, 0, sizeof(buf)); + + if (! device_ready(RTC_RTC_ADDR)) { + goto fail; + } + + print_time(buf); + + uart_send_string2(STM_UART_MGMT, "\r\n\r\n"); + + HAL_GPIO_TogglePin(LED_PORT, LED_GREEN); + DELAY(); + continue; + + fail: + HAL_GPIO_TogglePin(LED_PORT, LED_RED); + DELAY(); + } +} |