diff options
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/i2c_eeprom/main.cpp')
| -rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/i2c_eeprom/main.cpp | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/i2c_eeprom/main.cpp b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/i2c_eeprom/main.cpp new file mode 100644 index 0000000000..e6fd0d0d75 --- /dev/null +++ b/tmk_core/tool/mbed/mbed-sdk/libraries/tests/mbed/i2c_eeprom/main.cpp @@ -0,0 +1,155 @@ +#include "test_env.h" + +/****************************************************************************** +* This will test an I2C EEPROM connected to mbed by writing a predefined byte at +* address 0 and then reading it back and comparing it with the known byte value a +* number of times. This test was written specifically for reproducing the bug +* reported here: +* +* https://mbed.org/forum/bugs-suggestions/topic/4128/ +* +* Test configuration: +* +* set 'ntests' to the number of iterations +* set 'i2c_speed_hz' to the desired speed of the I2C interface +* set 'i2c_delay_us' to the delay that will be inserted between 'write' and +* 'read' I2C operations (https://mbed.org/users/mbed_official/code/mbed/issues/1 +* for more details). '0' disables the delay. +* define I2C_EEPROM_VERBOSE to get verbose output +* +* The test ran with a 24LC256 external EEPROM memory, but any I2C EEPROM memory +* that uses two byte addresses should work. +******************************************************************************/ + +#if defined(TARGET_KL25Z) +I2C i2c(PTC9, PTC8); + +#elif defined(TARGET_KL46Z) +I2C i2c(PTC9, PTC8); + +#elif defined(TARGET_K64F) +I2C i2c(PTE25, PTE24); + +#elif defined(TARGET_K22F) +I2C i2c(PTE0, PTE1); + +#elif defined(TARGET_K20D50M) +I2C i2c(PTB3, PTB2); + +#elif defined(TARGET_LPC812) +I2C i2c(P0_10, P0_11); + +#elif defined(TARGET_LPC1549) +I2C i2c(P0_23, P0_22); + +#elif defined(TARGET_LPC11U68) +I2C i2c(SDA, SCL); + +#elif defined(TARGET_DELTA_DFCM_NNN40) +I2C i2c(I2C_SDA0, I2C_SCL0); + +#elif defined(TARGET_NUCLEO_F030R8) || \ + defined(TARGET_NUCLEO_F070RB) || \ + defined(TARGET_NUCLEO_F072RB) || \ + defined(TARGET_NUCLEO_F091RC) || \ + defined(TARGET_NUCLEO_F103RB) || \ + defined(TARGET_NUCLEO_F302R8) || \ + defined(TARGET_NUCLEO_F303RE) || \ + defined(TARGET_NUCLEO_F334R8) || \ + defined(TARGET_NUCLEO_F401RE) || \ + defined(TARGET_NUCLEO_F411RE) || \ + defined(TARGET_NUCLEO_L053R8) || \ + defined(TARGET_NUCLEO_L073RZ) || \ + defined(TARGET_NUCLEO_L152RE) || \ + defined(TARGET_FF_ARDUINO) +I2C i2c(I2C_SDA, I2C_SCL); + +#else +I2C i2c(p28, p27); +#endif + +namespace { +const int ntests = 10000; +const int i2c_freq_hz = 400000; +const int i2c_delay_us = 0; +} + +int main() { + MBED_HOSTTEST_TIMEOUT(15); + MBED_HOSTTEST_SELECT(default_auto); + MBED_HOSTTEST_DESCRIPTION(I2C EEPROM read write test); + MBED_HOSTTEST_START("MBED_A19"); + + const int EEPROM_MEM_ADDR = 0xA0; + const char MARK = 0x66; + int fw = 0; + int fr = 0; + int fc = 0; + int i2c_stat = 0; + bool result = true; + + i2c.frequency(i2c_freq_hz); + printf("I2C: I2C Frequency: %d Hz\r\n", i2c_freq_hz); + + printf("I2C: Write 0x%2X at address 0x0000 test ... \r\n", MARK); + // Data write + { + char data[] = { 0, 0, MARK }; + if ((i2c_stat = i2c.write(EEPROM_MEM_ADDR, data, sizeof(data))) != 0) { + printf("Unable to write data to EEPROM (i2c_stat = 0x%02X), aborting\r\n", i2c_stat); + notify_completion(false); + return 1; + } + + // ACK polling (assumes write will be successful eventually) + while (i2c.write(EEPROM_MEM_ADDR, data, 0) != 0) + ; + } + + printf("I2C: Read data from address 0x0000 test ... \r\n"); + // Data read (actual test) + for (int i = 0; i < ntests; i++) { + // Write data to EEPROM memory + { + char data[] = { 0, 0 }; + if ((i2c_stat = i2c.write(EEPROM_MEM_ADDR, data, 2, true)) != 0) { + printf("Test %d failed at write, i2c_stat is 0x%02X\r\n", i, i2c_stat); + fw++; + continue; + } + } + + // us delay if specified + if (i2c_delay_us != 0) + wait_us(i2c_delay_us); + + // Read data + { + char data[1] = { 0 }; + if ((i2c_stat = i2c.read(EEPROM_MEM_ADDR, data, 1)) != 0) { + printf("Test %d failed at read, i2c_stat is 0x%02X\r\n", i, i2c_stat); + fr++; + continue; + } + + if (data[0] != MARK) { + printf("Test %d failed at data match\r\n", i); + fc++; + } + } + } + + result = (fw + fr + fc == 0); + printf("EEPROM: Test result ... [%s]\r\n", result ? "OK" : "FAIL"); + + if (!result) { + printf("Test Statistics:\r\n"); + printf("\tTotal tests: %d\r\n", ntests); + printf("\tFailed at write: %d\r\n", fw); + printf("\tFailed at read: %d\r\n", fr); + printf("\tData mismatch: %d\r\n", fc); + printf("\tTotal failures: %d\r\n", fw + fr + fc); + } + + MBED_HOSTTEST_RESULT(result); +} |